Họ: H -2 =0A decision-makor wishes to test the null and emative hypotheses shown to the right using an alpha level equal to 0.05. The populationstandard deviations are assumed to be known uter the sample data are collected, the test statistic is computed to be z=2.43. Completeparts a through c below.a. Using the test statistic approach, what conclus ion should be reached about the null hypothesis?Determine the critical value(s) for a = 0.05. Select the corroct choice below and fill in the answer box to complete your choice.(Round to two decimal places as needed.)O A. Z=OB. 22/2=Oc. -1

Answered: Image /qna-images/answer/979f2e66-ea1d-4bb0-9f0c-e6eddd553035.jpg

Answered: A decision-makor wishes to test the…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

The mean age when smokers first start to smoke varies from generation to generation. Asurvey of 30 smokers of this generation with a sample standard deviation of 3,8 was done tosee if the mean starting age is 19. The sample mean was 19.5. Suppose that you wish to testthe null hypothesis H0: μ = 19 against the alternative hypothesis Ha: μ > 19.a) Determine the test statistic and P-value of the test.b) Do you reject the null hypothesis at significance level 0.05? Explain.
Suppose that you want to perform a hypothesis test for a population mean. Assume that the population standard deviation is unknown and that the sample size is relatively small. In each exercise, we have given the distribution shape of the variable under consideration. Decide whether you would use the t-test, the Wilcoxon signed-rank test, or neither. Explain your answers. Reverse J Shaped
The population of heights (in inches) of students of a large university is normally distributed with mean u and standard deviation o = 4 inches. A social scientist wishes to test Ho : u 69. • State a level of significance that you think the social scientist should/could use. No need to justify your choice. • If a sample of size n = would you draw? 25 gave sample mean Xn = 70 inches what conclusion • What kind of potential error you might be making in light of your decision in part (ii)?
The brightness of a television picture tube can be evaluated by measuring the amount of current required to achieve a particular brightness level. A sample of 10 tubes results in x = 317.2 and s = 15.7. Find (in microamps) a 99% confidence interval on mean current required. State any necessary assumptions about the underlying distribution of the data.
The mean number of eggs per person eaten in the United States is 263. Do college students eat less eggs than the average American? The 62 college students surveyed averaged 260 eggs per person and their standard deviation was 30.3. What can be concluded at the αα = 0.05 level of significance? For this study, we should use The null and alternative hypotheses would be: H0:H0: Correct H1:H1: Correct The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is αα Based on this, we should the null hypothesis. Thus, the final conclusion is that ... The data suggest that the sample mean is not significantly less than 263 at αα = 0.05, so there is statistically insignificant evidence to conclude that the sample mean number of eggs consumed by college students per year is less than 260. The data suggest that the population mean is not…
Show complete solution. Thank you!
I also need the standardized test statistic and whether it's required to reject or fail to reject the hypothesis and interpret the decision in the context of the original claim
I have a question: 2) A sample of 100 women had a mean pulse rate of 74.4 bpm with a standard deviation of 11.7. Use ? =0.05 to test the hypothesis that the mean pulse rate for women is greater than 74. (P-value approach)
A data set includes data from 400 random tornadoes. The display from technology available below results from using the tornado lengths (miles) to test the claim that the mean tornado length is greater than 2.6 miles. Use a 0.05 significance level. Use the display to identify the null and alternative hypotheses, test statistic, and P-value. State the final conclusion that addresses the original claim. Hypothesis test results: μ: Mean of variable Ho: μ=2.6 HA H>2.6 Variable Sample Mean Length 2.75311 Std. Err. DF T-Stat 0.274284 399 0.558217 P-value 0.2885 OA. Fail to reject Ho. There is sufficient evidence to support the claim that the mean tornado length is greater than 2.6 miles OB. Reject Ho. There is sufficient evidence to support the claim that the mean tornado length is greater than 2.6 miles OC. Reject Ho. There is not sufficient evidence to support the claim that the mean tornado length is greater than 2.6 miles. OD. Fail to reject Ho. There is not sufficient evidence to support…
A data set includes data from student evaluations of courses. The summary statistics are n = 86, x 3.93, s 0.58. Use a 0.10 significance level to test the claim that the population of student course evaluations has a mean equal to 4.00. Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, test statistic, P-value, and state the final conclusion that addresses the original claim. What are the null and alternative hypotheses? O A. Ho: H#4.00 O B. Ho: µ= 4.00 H4: µ=4.00 H4: µ#4.00 O C. Ho: H=4.00 O D. Ho: = 4.00 H,: p> 4.00 H,: H<4.00 Determine the test statistic. (Round to two decimal places as needed.) Determine the P-value. (Round to three decimal places as needed.) State the final conclusion that addresses the original claim. Ho. There is evidence to conclude that the original claim that the mean of the population of student course evaluations is equal to 4.00 correct.
A sample of 10 from population 1 has a mean of 32 and a standard deviation of 6. A sample of 13 from population 2 has a mean of 48 and a standard deviation of 8. The population standard deviations are unknown but assumed to be equal. Test the hypothesis, at the 1% level of significance, that the population means are the same. State your conclusion as a sentence and include the test statistic and the critical value.
Among private universities in the United States, the mean ratio of students to professors is 35.2 (i.e., 35.2 students for each professor) with a standard deviation of 8.8. Suppose a random sample of 50 universities is selected and the observed mean student-to-professor ratio is 38. Is there evidence that the reported mean ratio actually exceeds 35.2? Use  = 0.05 and conduct the appropriate hypothesis test. ( See attached picture )

SEE MORE QUESTIONS

Recommended textbooks for you

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

SEE MORE TEXTBOOKS