A marriage counselor has traditionally seen that the proportion p of all married couples for whom her communication program can prevent divorce is 79%. Aftermaking some recent changes, the marriage counselor now claims that her program can prevent divorce in more than 79% of married couples. In a randomsample of 240 married couples who completed her program, 206 of them stayed together. Based on this sample, is there enough evidence to support themarriage counselor's claim at the 0.01 level of significance?Perform a one-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.)(a) State the null hypothesis H, and the alternative hypothesis H,.Ho:H :0(b) Determine the type of test statistic to use.(Choose one)O=D0OSO(c) Find the value of the test statistic. (Round to three or more decimal places.)ローロO

Answered: Image /qna-images/answer/9087a55b-1aac-4beb-9a74-32df90274698.jpg

Answered: Carry your intermediate computations to…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Ho:p = 0.5 versus H,: p>0.5 n= 200; x = 120, a = 0.05 Use technology to find the P-value. P-value = (Round to three decimal places as needed.)
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The critical region and critical value for a hypothesis test are shown below. The test statistic is Z = -1.7. Should you rejcet or fail to reject the null hypothesis. -2 -1.41 2 1 1.41 -3 3 Reject O Fail to Reject Submit Question
Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. H0: p=0.4 versus H1: p>0.4 n=125; x=55, α=0.1
Consider the data. xi 3 12 6 20 14 yi 60 40 65 5 15 Use the t test to test the following hypotheses (? = 0.05): H0: ?1 = 0 Ha: ?1 ≠ 0 Find the value of the test statistic. (Round your answer to three decimal places.) Use the F test to test the hypotheses in part (d) at a 0.05 level of significance. Present the results in the analysis of variance table format.
P-value is -.055 You are asked to make a decision about whether to reject the null hypothesis that the population value of gamma equals 0 (i.e., that there is no ordinary association in the population between frequency of prayer and health). If alpha = 0.05 and you use a non-directional alternative hypothesis, which of the following is true?) A. Since the p-value is larger than alpha, you do not reject the null hypothesis B. Since the p-value is less than alpha, you do not reject the null hypothesis C. Since the p-value is larger than alpha, you reject the null hypothesis. D. Since the p-value is less than alpha, you reject the null hypothesis
Please use the data to find the hypothesis test
Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Ho: p=0.7 versus H₁: p > 0.7 n = 250; x = 190; α = 0.1 Click here to view page 1 of the table. Click here to view page 2 of the table. Calculate the test statistic, Zo. Zo = (Round to two decimal places as needed.)
Movie Theater Attendance: The data shown are the movie admissions, in thousands, of people attending movie theaters over two different time periods. At α = 0.05, is there a difference in the means for the movie attendance for these time periods? Use the traditional method of hypothesis testing unless otherwise specified. State the hypotheses and identify the claim. Find the critical value. Compute the test value. Make the decision. Summarize the results. Return of the Jedi (1983) Harry Potter 5 (2007) 6207 10579 4412 4395 6424 6031 8126 6607 8423 5357 7456 2431 4171 2140 3829 1969 3756 1778 5074 2384 6833 2866 5189 2337
A decade-old study found that the proportion of high school seniors who felt that "getting rich" was an important personal goal was 68%. Suppose that we have reason to believe that this proportion has changed, and we wish to carry out a hypothesis test to see if our belief can be supported. State the null hypothesis H, and the alternative hypothesis H that we would use for this test. H: 0 O
State whether the standardized test statistic t indicates that you should reject the null hypothesis. Explain. (a) t= 1.584 (b) t=0 (c) t= - 1.526 (d) t= - 1.604 to = - 1.558 (a) For t= 1.584, should you reject or fail to reject the null hypothesis? O A. Fail to reject Ho, because t> - 1.558. O B. Reject Ho, because t> - 1.558. O C. Reject Ho, because t - 1.558. O B. Fail to reject Ho, because t - 1.558. (c) For t= - 1.526, should you reject or fail to reject the null hypothesis? O A. Reject Ho, because t - 1.558. O C. Fail to reject Ho, because t> - 1.558. O D. Fail to reject Hn, because t< - 1.558.
In the twentieth century, it was a common practice in Southern California for houses to be built with pools in the backyard. For new homes, however, that practice may be changing, possibly as a measure to help reduce climate change. A recent study examined a random sample of 171 houses built in Southern California in the twentieth century and an independent, random sample of 75 new houses built in Southern California. The sample of twentieth century houses contained 76 houses with pools, and the sample of new houses contained 30 houses with pools. Based on this survey, can we conclude, at the 0.01 level of significance, that the proportion p, of all Southern California twentieth century houses that were built with pools is greater than the proportion p, of all new Southern California houses that were built with pools? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places and round your answers as specified in the…

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