Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.

Get a Professional Answer

Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.

100% Satisfaction Guarantee

Rate the answer you receive.

Ask R.R. Jha Your Own Question

R.R. Jha, Tutor

Category: Homework

Satisfied Customers: 5470

Experience: B.Tech

20870358

Type Your Homework Question Here...

R.R. Jha is online now

Identify Null Hypothesis Ho And Alternative Hypothesis

Resolved Question:

1. Identify the null hypothesis Ho and the alternative hypothesis H1. A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO, p, is less than 1 in every one thousand.

(Points: 7) Ho: p = 0.001, H1: p 0.001 Ho: p > 0.001, H1: p = 0.001 Ho: p 0.0008, H1: p = 0.0008 Ho: p = 0.0008, H1: p > 0.0008 Ho: p < 0.0008, H1: p = 0.0008 Ho: p = 0.0008, H1: p 62.4. (Points : 6) 1.48 1.81 1.81 -1.48

5. A researcher claims that 62% of voters favor gun control. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms.

(Points : 7) There is sufficient evidence to support the claim that more than 62% of voters favor gun control. There is not sufficient evidence to support the claim that 62% of voters favor gun control. There is sufficient evidence to warrant rejection of the claim that 62% of voters favor gun control. There is not sufficient evidence to warrant rejection of the claim that 62% of voters favor gun control.

6. Carter Motor Company claims that its new sedan, the Libra, will average better than 30 miles per gallon in the city. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is to reject the null hypothesis, state the conclusion in nontechnical terms. Be sure to address the original claim.

(Points: 7) There is not sufficient evidence to support the claim that the mean is less than 30 miles per gallon. There is not sufficient evidence to support the claim that the mean is greater than 30 miles per gallon. There is sufficient evidence to support the claim that the mean is less than 30 miles per gallon. There is sufficient evidence to support the claim that the mean is greater than 30 miles per gallon.

7. Suppose you wish to test the claim that μ is different from 113.9. Given a sample of n = 218 and a significance level of = 0.10, what criterion would be used for rejecting the null hypothesis? Assume that the standard deviation, σ, of the population is known.

(Points: 6) Reject Ho if test statistic > 1.645 or < -1.645. Reject Ho if test statistic 1.645. Reject Ho if test statistic > 1.28 or 2.33 or 2.575. Reject Ho if test statistic > 2.575 or 2.33.

9. Suppose you wish to test the claim that μ > 10. Given a sample of n = 50 and a significance level of = 0.10, what criterion would be used for rejecting the null hypothesis? Assume that the standard deviation, σ, of the population is known.

(Points : 6) Reject Ho if test statistic > 1.645 or 1.645. Reject Ho if test statistic > 1.28. Reject Ho if test statistic 28,107.

11. Find the critical value or values for the given hypothesis, sample size, and significance level. Assume that the standard deviation of the population, σ, is unknown. H1: μ > 3.74, n = 13, = 0.01.

(Points : 7) 2.681 2.650 -2.681 -2.650

12. for a data set is 131.8, s is 16.7 and n = 12. The data is approximately normal and the standard deviation, σ, of the population is unknown

12 cut off. There are three other questions. I have to finish this assignment in the next 30 minutes.

12. "X with line over it" for a data set is 131.8, s is 16.7 and n = 12. The data is approximately normal and the standard deviation, σ, of the population is unknown. Ho: μ = 136.8, H1: μ "does not equal" 136.8. Should the statistician use a t distribution, a normal distribution, or neither to test the null hypothesis? (Points : 7) Neither t distribution Normal distribution

13. A series of measurements on a machine part yielded the following sample statistics. The series was normally distributed. "X with line over it" = 9.19, s = 0.19, n = 23. For the part to fit properly in the assembled product, the measurement should be 9.361. The standard deviation, σ, of the population is unknown. Should the statistician use a t distribution, a normal distribution, or neither to test the null hypothesis?

(Points : 7) t distribution Neither Normal distribution

14. A radio show producer believes that a new proposed format would be preferred by only 15% of their current listeners. A survey of 100 current listeners showed that 21% favored the new format. Does the producer know his business? H1: p>0.15. Confidence level: 99%. What is the value of the appropriate test statistic to test the null hypothesis? (Points : 7) 1.680 2.218 1.042 5.209

15. You wish to test the claim that μ = 74.1 at the "ALPHA" = 0.01 significance level. In a sample of n = 19, the sample mean is 80.3 and the standard deviation of the sample is s=6.5. What is the value of the appropriate test statistic?

2. Identify the null hypothesis Ho and the alternative hypothesis H1. An entomologist writes an article in a scientific journal which claims that fewer than 8 in ten thousand male fireflies are unable to produce light due to a genetic mutation. Use the parameter p, the true proportion of fireflies unable to produce light.

(Points: 7) Ho: p > 0.0008, H1: p = 0.0008 Ho: p = 0.0008, H1: p > 0.0008 Ho: p < 0.0008, H1: p = 0.0008 Ho: p = 0.0008, H1: p < 0.0008

3. Assume that the data has a normal distribution. Also assume that the standard deviation of the population, sigma, is known. Find the critical value(s) used to test a null hypothesis: level of significance pq7_1 = 0.02 for a left-tailed test.

(Points: 6) -1.96 e4_8 1.96 e4_8 2.05 -2.05

4. Assume that the data has a normal distribution. Also assume that the standard deviation of the population, sigma, is known. Find the critical value(s) used to test a null hypothesis: level of significance pq7_1 = 0.07; H1 is μ > 62.4.

(Points: 6)

1.48 e4_8 1.81 1.81 -1.48

8. Suppose you wish to test the claim that μ = 3.45. Given a sample of n = 32 and a significance level of pq7_1 = 0.01, what criterion would be used for rejecting the null hypothesis? Assume that the standard deviation, σ, of the population is known.

(Points: 6) Reject Ho if test statistic > 2.33 or < -2.33. Reject Ho if test statistic > 2.575. Reject Ho if test statistic > 2.575 or < -2.575. Reject Ho if test statistic > 2.33.

Customer:replied 1 year ago.

And #10 as well. Again, I apologize for not properly cut and pasting the first time.

10. A population is normally distributed with a standard deviation σ = 336. We wish to test the hypotheses Ho: μ = 28,107; H1: μ > 28,107. A 194-item sample has a mean .e3_29 = 28,678.2. Compute the value of the test statistic (Points: 7) 2353.95 0.12 23.68 989.29

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

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