Math Homework

Ask Math Questions. Get Help With Your Math Homework

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

Need help with statistics/hypothesis testing please. I have…

Need help with statistics/hypothesis testing...
Need help with statistics/hypothesis testing please. I have several problems to answer.

1. State the claim mathematically. Then write the null and alternative hypothesis. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. a. A research hospital claims that more than 3.7% of the population suffers from high blood pressure. Use p, the represent the population proportion.

Answer: Claim:
H0 :
Ha :
Test :

b. The highest acceptable level of pesticide found in quail has been limited to 0.35 parts per million (ppm). A hypothesis test is perform to test if the level of the pesticide is higher.
Answer: Claim:
H0 :
Ha :
Test :


Hypothesis Testing for the Mean (Large Samples)
Use the guidelines at the end of the project.

2. Use the method specified to perform the hypothesis test for the population
mean .
WeatherBug say that the mean daily high for December in a large Florida city is 76 degrees F. WFLA weather suspects that this temperature is not accurate. A hypothesis test is performed the determine if the mean is actually lower than 76 degrees F. Assume that the population standard deviation of = 5.6 F. A sample of mean daily temperatures for December over the past 40 years gives x bar 74 degrees F. At a = 0.01, does the data provide sufficient evidence to conclude that the mean temperature is lower than 76 degrees F.

a. Use the critical value z0 method from the normal distribution.
1. H0 :
Ha :
2. a =
3. Test statistics:
4. P-value or critical z0 or t0.
5. Rejection Region:

6. Decision:
7. Interpretation:


b. Use the P-value method.


1. H0 :
Ha :
2. a =
3. Test statistics:
4. P-value or critical z0 or t0.
5. Rejection Region:
6. Decision:
7. Interpretation:

Hypothesis Testing for Mean (Small Samples)

3. A local tire store suspects that the mean life of a new discount tire is less that 39,000 miles. To check the claim, the store selects randomly 18 of these new discount tires. When they are tested, it is found that the mean life is 38,250 miles with a sample standard deviation s = 1200 miles. Assume the distribution is normally distributed.

a. Use the critical value t0 method from the normal distribution to test for the population mean u. Test the company’s claim at the level of significance a = 0.05.


1. H0 :
Ha :
2. a =
3. Test statistics:
4. P-value or critical z0 or t0.
5. Rejection Region:
6. Decision:

7. Interpretation:



b. Use the critical value t0 method from the normal distribution to test for the population mean u. Test the company’s claim at the level of significance a = 0.01

1. H0 :
Ha :
2. a =
3. Test statistics:
4. P-value or critical z0 or t0.
5. Rejection Region:
6. Decision:
7. Interpretation:


Hypothesis Testing for Proportions.

4. A flash drive manufacturer has set a standard on their production process. When defects exceed 3%, the production process is unacceptable. A random sample of 300 drives is tested. The defective rate is 5.9%. Use a level of significance of a = 0.01 to test to see if you have sufficient evidence to support the claim that the defective rate exceeds 3%. (Round phat to 3 decimal places.)


1. H0 :
Ha :
2. a =
3. Test statistics:
4. P-value or critical z0 or t0.
5. Rejection Region:

6. Decision:
7. Interpretation:

Guidelines -- Hypothesis Testing Steps:
1. State H0 and Ha.
2. Specify the level of significance alpha ?.
3. Determine the test statistic, either z or t. Find the test statistic using the given data.
4. Find the P-value or the critical value(s) z0 or t0. Use the method specified in the problem statement.
5. Define the rejection region using either the P-value method or critical values from the Normal distribution.
6. Make a decision t
Show More
Show Less
Ask Your Own Math Homework Question
Answered in 5 minutes by:
6/26/2010
Stevewh
Stevewh, Bachelor's Degree
Category: Math Homework
Satisfied Customers: 7,610
Experience: Statistics degree
Verified
Hi,

Can you clarify the questions ?

Can you put then into a word file ?

Steve
Ask Your Own Math Homework Question
Customer reply replied 8 years ago

Steve, let's see if this comes across a little better

  • 1. State the claim mathematically. Then write the null and alternative hypothesis. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed.
  • a. A research hospital claims that more than 3.7% of the population suffers from high blood pressure. Use p, the represent the population proportion.

Answer: Claim:

H0 :

Ha :

Test :

 

  • b. The highest acceptable level of pesticide found in quail has been limited to 0.35 parts per million (ppm). A hypothesis test is perform to test if the level of the pesticide is higher. (4 points)

Answer: Claim:

H0 :

Ha :

Test :

 

 

Hypothesis Testing for the Mean (Large Samples)

Use the guidelines at the end of the project.

 

  • 2. Use the method specified to perform the hypothesis test for the population

mean m. WeatherBug say that the mean daily high for December in a large Florida city is 76degrees F. WFLA weather suspects that this temperature is not accurate. A hypothesis test is performed the determine if the mean is actually lower than 76 degrees F. Assume that the population standard deviation of s = F. A sample of mean daily temperatures for December over the past 40 years gives xbar 74 degrees F. At a = 0.01, does the data provide sufficient evidence to conclude that the mean temperature is lower than F.

 

a. Use the critical value z0 method from the normal distribution.

 

•1. H0 :

Ha :

•2. a =

•3. Test statistics:

•4. P-value or critical z0 or t0.

•5. Rejection Region:

•6. Decision:

•7. Interpretation:

 

 

  • b. Use the P-value method.

 

•1. H0 :

Ha :

•2. a =

•3. Test statistics:

•4. P-value or critical z0 or t0.

•5. Rejection Region:

•6. Decision:

•7. Interpretation:

Section 7.3: Hypothesis Testing for Mean (Small Samples)

 

  • 3. A local tire store suspects that the mean life of a new discount tire is less that 39,000 miles. To check the claim, the store selects randomly 18 of these new discount tires. When they are tested, it is found that the mean life is 38,250 miles with a sample standard deviation s = 1200 miles. Assume the distribution is normally distributed.

a. Use the critical value t0 method from the normal distribution to test for the population mean m. Test the company's claim at the level of significance a = 0.05.

 

•1. H0 :

Ha :

•2. a =

•3. Test statistics:

•4. P-value or critical z0 or t0.

•5. Rejection Region:

•6. Decision:

•7. Interpretation:

 

 

 

b. Use the critical value t0 method from the normal distribution to test for the population mean m. Test the company's claim at the level of significance a = 0.01

 

•1. H0 :

Ha :

•2. a =

•3. Test statistics:

•4. P-value or critical z0 or t0.

•5. Rejection Region:

•6. Decision:

•7. Interpretation:

 

 

Hypothesis Testing for Proportions.

 

4. A flash drive manufacturer has set a standard on their production process. When defects exceed 3%, the production process is unacceptable. A random sample of 300 drives is tested. The defective rate is 5.9%. Use a level of significance of a = 0.01 to test to see if you have sufficient evidence to support the claim that the defective rate exceeds 3%. (Round phat to 3 decimal places.)

 

 

•1. H0 :

Ha :

•2. a =

•3. Test statistics:

•4. P-value or critical z0 or t0.

•5. Rejection Region:

•6. Decision:

•7. Interpretation:

 

 

 

Guidelines -- Hypothesis Testing Steps:

  1. State H0 and Ha.
  2. Specify the level of significance alpha a.
  3. Determine the test statistic, either z or t. Find the test statistic using the given data.
  4. Find the P-value or the critical value(s) z0 or t0. Use the method specified in the problem statement.
  5. Define the rejection region using either the P-value method or critical values from the Normal distribution.
  6. Make a decision to reject or fail to reject the null hypothesis.
  7. Interpret the decision in the context of the original claim.
Ok,

Here are the answers

Steve
Stevewh
Stevewh, Bachelor's Degree
Category: Math Homework
Satisfied Customers: 7,610
Experience: Statistics degree
Verified
Stevewh and 87 other Math Homework Specialists are ready to help you
Ask your own question now
Customer reply replied 8 years ago
THANK YOU SO MUCH!!!!
Ok,

Steve
Ask Your Own Math Homework Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a math tutor or teacherLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Stevewh Your Own Question
Stevewh
Stevewh
Stevewh, Bachelor's Degree
Category: Math Homework
Satisfied Customers: 7,610
7,610 Satisfied Customers
Experience: Statistics degree

Stevewh is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Mr. Gregory White

Mr. Gregory White

Master's Degree

92 satisfied customers

M.A., M.S. Education / Educational Administration

JACUSTOMER-yrynbdjl-

JACUSTOMER-yrynbdjl-

Master's Degree

49 satisfied customers

I have taught college Mathematics for the past 10 years.

SusanAthena

SusanAthena

Master's Degree

41 satisfied customers

Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.

Dr Arthur Rubin

Dr Arthur Rubin

Doctoral Degree

38 satisfied customers

Ph.D. in Mathematics, California Institute of Technology

mhasan420

mhasan420

Master's Degree

29 satisfied customers

BA Maths, Oxford

Don

Don

Master's Degree

17 satisfied customers

M.S. Astronautical Engineering. Math/Science/Comp Tutor

judybailey61

judybailey61

Bachelor's Degree

17 satisfied customers

20 years teaching mathematics

< Previous | Next >

Related Math Homework Questions
Section 7.1 Introduction to Hypothesis Testing 1. State
Section 7.1 : Introduction to Hypothesis Testing 1. State the claim mathematically. Then write the null and alternative hypothesis. Determine whether the hypothesis test is left-tailed, right-tailed, … read more
dhouse1940
dhouse1940
Retired
Master\u0027s Degree
46 satisfied customers
3. A local brewery distributes beer in bottles labeled 12 ounces.
3. A local brewery distributes beer in bottles labeled 12 ounces. A government agency thinks that the brewery is cheating its customers. The agency select 20 of these bottles, measures their contents,… read more
Stevewh
Stevewh
Bachelor's Degree
Bachelor's Degree
7,610 satisfied customers
Use the method specified to perform the hypothesis test for
Use the method specified to perform the hypothesis test for the population mean. A local brewery distributes beer in bottles labeled 32 ounces. A government agency thinks that the brewery is cheating … read more
Stevewh
Stevewh
Bachelor's Degree
Bachelor's Degree
7,610 satisfied customers
A local brewery distributes beer in bottles labeled 12 ounces.
A local brewery distributes beer in bottles labeled 12 ounces. A government agency thinks that the brewery is cheating its customers. The agency select 20 of these bottles, measures their contents, an… read more
Osbert12
Osbert12
Master\u0027s Degree
412 satisfied customers
1.State the claim mathematically. Then write the null and alternative
1.State the claim mathematically. Then write the null and alternative hypothesis. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. a. According to fans, the mean scor… read more
dhouse1940
dhouse1940
Retired
Master\u0027s Degree
46 satisfied customers
a. In a recent poll, it was found that 43% of registered U.S.
a. In a recent poll, it was found that 43% of registered U.S. voters would vote for the incumbent president. If 100 registered voters were sampled randomly, it was found that 35% would vote of the inc… read more
Osbert12
Osbert12
Master\u0027s Degree
412 satisfied customers
The guidelines for hypothesis testing are found at the end
The guidelines for hypothesis testing are found at the end of this document. To receive full credit, you are to follow the seven steps and label them by these guidelines. Section 7.1 : Introduction to… read more
Osbert12
Osbert12
Master\u0027s Degree
412 satisfied customers
1. State the claim mathematically. Then write the null and
1. State the claim mathematically. Then write the null and alternative hypothesis. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed… read more
abozer
abozer
Bachelor\u0027s Degree
6,158 satisfied customers
Section 7.4 Hypothesis Testing for Proportions. 4. The
Section 7.4: Hypothesis Testing for Proportions. 4. The Women's Center currently uses a screen method to detect breast cancer in women. The method fails to detect cancer in 15% of the women who have t… read more
SusanAthena
SusanAthena
Master's Degree
Master's Degree
41 satisfied customers
1. The Bite-Lite Company claims that it new hi-tech bulb has
1. The Bite-Lite Company claims that it new hi-tech bulb has a mean lifetime of 900 hours. A customer buys 25 bulbs. He finds that the mean life of the 25 bulbs is 870 hours and a standard deviation s… read more
Chirag
Chirag
Master\u0027s Degree
55 satisfied customers
1. State the claim mathematically. Then write the null and
1. State the claim mathematically. Then write the null and alternative hypothesis. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. a. A graduate student in entomolog… read more
rajeevanpillai
rajeevanpillai
Master\u0027s Degree
22 satisfied customers
1. State the claim mathematically. Then write the null and
1. State the claim mathematically. Then write the null and alternative hypothesis. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed a. A graduate student in entomology… read more
StatisticsExpert
StatisticsExpert
Asst. Professor
Doctoral Degree
5 satisfied customers
Confidence Intervals for the Mean (Large Samples)1.Find
1. State the claim mathematically. Then write the null and alternative hypothesis. Determine whether the hypothesis test is left-tailed, right-tailed, or two-taileda. According to fans, the mean score… read more
abozer
abozer
Bachelor\u0027s Degree
6,158 satisfied customers
Total points are 29. Points are included with each problem.
Total points are 29. Points are included with each problem. For full credit, work should be included with each problem as applicable. Included with each section or problem are reference examples and e… read more
muvee
muvee
Master's Degree
1,030 satisfied customers
Section 7.1 Introduction to Hypothesis TestingState the
Section 7.1 : Introduction to Hypothesis Testing State the claim mathematically. Then write the null and alternative hypothesis. Determine whether the hypothesis test is left-tailed, right-tailed, or … read more
Greg
Greg
Master\u0027s Degree
1,292 satisfied customers
3. A local tire store suspects that the mean life of a new
3. A local tire store suspects that the mean life of a new discount tire is less than 39,000 miles. To check the claim, the store selects randomly 18 of these new discount tires. When they are tested,… read more
abozer
abozer
Bachelor\u0027s Degree
6,158 satisfied customers
please if you can get some time to help me with this project. The
please if you can get some time to help me with this project. The guidelines for hypothesis testing are found at the end of this document. To receive full credit, you are to follow the seven steps and… read more
Stevewh
Stevewh
Bachelor's Degree
Bachelor's Degree
7,610 satisfied customers
1.State the claim mathematically. Then write the null and alternative
1.State the claim mathematically. Then write the null and alternative hypothesis. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. a. A research hospital claims that … read more
OnlineTutor
OnlineTutor
Research Scholar
Master\u0027s Degree
86 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x