Calculus and Above

Calculus and Above

# 9.3 If you use a 0.10 level of significance in a two-tail hypothesis

Customer Question
9.3 If you use a 0.10 level of significance in a two-tail hypothesis test, what is your decision rule for rejecting a null hypothesis that the population mean equals 500 if you use the Z test?
9.13 Do business seniors at your school prepare for class more than, less than, or about the same as business seniors at other schools? The National Survey of Student Engagement (NSSE) found that business seniors spent a mean of 14 hours per week preparing for class. (Source: A Fresh Look at Student Engagement Annual Results 2013, available at bit.ly/1j3Ob7N.)
a. State the null and alternative hypotheses to try to prove that the mean number of hours preparing for class by business seniors at your school is different from the 14-hour-per-week benchmark reported by the NSSE.
b. What is a Type I error for your test?
c. What is a Type II error for your test?
9.15 Suppose that in Problem 9.14, the standard deviation is 1,200 hours.
.a. Repeat (a) through (d) of Problem 9.14, assuming a standard deviation of 1,200 hours.
b. Compare the results of (a) to those of Problem 9.14.
I do not need 9.14 answered just providing based on question 9.15
9.14 The quality-control manager at a compact flu-orescent light bulb (CFL) factory needs to determine whether the mean life of a large shipment of CFLs is equal to 7,500 hours. The population standard deviation is 1,000 hours. A random sample of 64 CFLs indicates a sample mean life of 7,250 hours.
a. At the 0.05 level of significance, is there evidence that the mean life is different from 7,500 hours?
b. Compute the p-value and interpret its meaning.
c. Construct a 95% confidence interval estimate of the population mean life of the CFLs
.d. Compare the results of (a) and (c). What conclusions do you reach?
9.25 A manufacturer of chocolate candies uses machines to package candies as they move along a filling line. Although the packages are labeled as 8 ounces, the company wants the pack-ages to contain a mean of 8.17 ounces so that virtually none of the packages contain less than 8 ounces. A sample of 50 packages is selected periodically, and the packaging process is stopped if there is evidence that the mean amount packaged is different from 8.17 ounces. Suppose that in a particular sample of 50 packages, the mean amount dispensed is 8.159 ounces, with a sample standard deviation of 0.051 ounce.
a. Is there evidence that the population mean amount is different from 8.17 ounces? (Use a 0.05 level of significance.)
b. Determine the p-value and interpret its meaning.
9.49 You are the manager of a restaurant that delivers pizza to college dormitory rooms. You have just changed your delivery process in an effort to reduce the mean time between the order and completion of delivery from the current 25 minutes. A sample of 36 orders using the new delivery process yields a sample mean of 22.4 minutes and a sample standard deviation of 6 minutes.
a. Using the six-step critical value approach, at the 0.05 level of significance, is there evidence that the population mean deliv-ery time has been reduced below the previous population mean value of 25 minutes?
b. At the 0.05 level of significance, use the five-step p-value ap-proach.
c. Interpret the meaning of the p-value in (b).
d. Compare your conclusions in (a) and (b).
9.55 According to a recent National Association of Colleges and Employers (NACE) report, 48% of college student internships are unpaid. (Source: “Just 38 Percent of Unpaid Internships Were Subject to FLSA Guidelines,” bit.ly/Rx76M8.) A recent survey of 60 college interns at a local university found that 30 had unpaid internships.
a. Use the five-step p-value approach to hypothesis testing and a 0.05 level of significance to determine whether the propor-tion of college interns that had unpaid internships is different from 0.48.
b. Assume that the study found that 37 of the 60 college interns had unpaid internships and repeat (a). Are the conclusions the same?
Submitted: 1 year ago.Category: Calculus and Above
Show More
Show Less
Customer reply replied 1 year ago
I need the work to be shown through excel and each problem to be on a different excel page. I need the excel formulas to be used not manual calculations. I am not willing to pay more than 20.00.
5/18/2016
Tutor: Ryan, Engineer replied 1 year ago
Ryan, Engineer
Category: Calculus and Above
Satisfied Customers: 9,116
Experience: B.S. in Civil Engineering
Verified
Hi, Thank you for using the site. I'll be happy to help you with these problems. Is there any particular deadline for completion? Thanks, Ryan
Customer reply replied 1 year ago
I have a deadline of this Friday 05/20/2016
Tutor: Ryan, Engineer replied 1 year ago
Ok, no problem. I'll have it posted for you well before then.
Customer reply replied 1 year ago
Is there any way you can do 20.00?
Tutor: Ryan, Engineer replied 1 year ago
I don't have any control over the pricing at all, so I can't change the price in either direction. You would need to contact a Customer Service representative for assistance with that issue. There should be a link on the page that you can use to contact them, or you can call them at(###) ###-####
SusanAthena, Master's Degree
Category: Calculus and Above
Satisfied Customers: 102
102 Satisfied Customers
Experience: Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.

SusanAthena is online now

A new question is answered every 9 seconds

• 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.

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.
...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:

SusanAthena

Master's Degree

102 satisfied customers

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

Mr. Gregory White

Master's Degree

99 satisfied customers

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

Dr Arthur Rubin

Doctoral Degree

58 satisfied customers

Ph.D. in Mathematics, 1978, from the California Institute of Technology, over 20 published papers

JACUSTOMER-yrynbdjl-

Master's Degree

42 satisfied customers

I have a MS in Mathematics and I have taught Mathematics for 10 years at the college level.

dhouse1940

Master's Degree

33 satisfied customers

BS mathematics, MS biostatistics, 35+ yrs designing & analyzing biological experiments.

Don

Master's Degree

29 satisfied customers

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

mhasan420

Master's Degree

15 satisfied customers

BA Maths, Oxford

< Previous | Next >

Related Calculus and Above Questions
I have this dice game, I love ❤ alot but want to try to
I have this dice game, I love ❤ alot but want to try to calculate how many combinations contain this specific roll so here it is: Among these eight TRI-color poker-like dice, I seem to not have much t… read more
GLENN
Master of Mathematics
343 satisfied customers
Are you good with statistics? Part A: Exploratory Data
Part A: Exploratory Data Analysis Preparation Open the files for the course project and the data set. For each of the five variables, process, organize, present and summarize the data. Analyze each variable by itself using graphical and numerical techniques of summarization. Use Excel as much as possible, explaining what the results reveal. Some of the following graphs may be helpful: stem-leaf diagram, frequency/relative frequency table, histogram, boxplot, dotplot, pie chart, bar graph. Caution: not all of these are appropriate for each of these variables, nor are they all necessary. More is not necessarily better. In addition be sure to find the appropriate measures of central tendency, the measures of dispersion, and the shapes of the distributions (for the quantitative variables) for the above data. Where appropriate, use the five number summary (the Min, Q1, Median, Q3, Max). Once again, use Excel as appropriate, and explain what the results mean. Analyze the connections or relationships between the variables. There are ten possible pairings of two variables. Use graphical as well as numerical summary measures. Explain the results of the analysis. Be sure to consider all 10 pairings. Some variables show clear relationships, while others do not. … read more
GLENN
Master of Mathematics
343 satisfied customers
I am looking for assistance for my inferential research and
I am looking for assistance for my inferential research and statistics project:• Clearly define the problem or issue you are addressing. Provide a brief background of any research you have found that … read more
GLENN
Master of Mathematics
343 satisfied customers
Purchase rider insurance cost \$475.00 a year coverage
purchase rider insurance cost \$475.00 a year coverage \$50,000.00 odds against her jewrly being stollen or lost are 499:1 … read more
GLENN
Master of Mathematics
343 satisfied customers
I am unable to respond fully as I have not tested the
I am unable to respond fully as I have not tested the accuracy of the answer.Q2. Consider a null hypothesis a population mean is 52. Assume that we have collected 38 sample data from which we complete… read more
GLENN
Master of Mathematics
343 satisfied customers
Can u help me with question 2? Probability. I have a
Ryan
Engineer
9,116 satisfied customers
1. When an additional independent variable is added to a regression analysis, which of the following could be indications of multicollinear independent variables? Source A drop in R-squared and a drop… read more
GLENN
Master of Mathematics
343 satisfied customers
Could you help me do an entire assignment? I need someone to
I need someone to complete a mymathlab assignment for me. There are 20 questions … read more
GLENN
Master of Mathematics
343 satisfied customers
Can you solve this:- Three impedances are connected in
Three impedances are connected in parallel, Z1 = 2 + J2 Z2 = 1 + j5 and Z3= j6. What is the equivalent admittance Y.Y= 1/Z1 + 1/Z2 +1/Z3Please express the admittance in both rectangular and polar forms. … read more
Ashok Kumar
Master\u0027s Degree
291 satisfied customers
Tutor O-Rama claims that their services will raise student
Tutor O-Rama claims that their services will raise student SAT math scores at least 50 points. The average score on the math portion of the SAT is μ=350 and σ= 35. The 100 students who completed the t… read more
Ryan
Engineer
9,116 satisfied customers
A friend of mine recommended you to me to answer these math
For Ryan** A friend of mine recommended you to me to answer these math questions about linear programming and matrix algebra.… read more
Ryan
Engineer
9,116 satisfied customers
A study is run to measure the association between exposure
A study is run to measure the association between exposure to lead paint in childhood and ADHD. Data on n=400 children is collected and data on exposure and ADHD diagnosis are shown below. Data are al… read more
GLENN
Master of Mathematics
343 satisfied customers
Find the equation of the regression line for the given data.
Find the equation of the regression line for the given data. Then construct a scatter plot of the data and draw the regression line.​ (The pair of variables has a significant​ correlation.) Then use the regression equation to predict the value of y for each of the given​ x-values, if meaningful. The table shows the shoe size and heights​ (in) for 6 men. … read more
GLENN
Master of Mathematics
343 satisfied customers
For a study conducted by the research department of a
For a study conducted by the research department of a pharmaceutical company, randomly selected individuals were asked to report the amount of money they spend annually on prescription allergy relief … read more
Ryan
Engineer
9,116 satisfied customers
Find the equation of the regression line for the given data.
Find the equation of the regression line for the given data. Then construct a scatter plot of the data and draw the regression line.​ (The pair of variables has a significant​ correlation.) Then use t… read more
GLENN
Master of Mathematics
343 satisfied customers
5) A small cohort study is conducted in 13 patients with an
5) A small cohort study is conducted in 13 patients with an aggressive cellular disorder linked cancer. The clinical courses of the patients are depicted graphically below. A) Compute the prevalence o… read more
GLENN
Master of Mathematics
343 satisfied customers
Number 16. Equation
Ryan
Engineer
9,116 satisfied customers
I have two quizzes to be completed and also three timed
I have two quizzes to be completed and also three timed exams. The time allowed to do each exam is four hours. Each item is 20 questions, multiple choice. I would send you screenshots of all the quizz… read more
GLENN
Master of Mathematics
343 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