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9. A telephone company wants to know whether the proportion p of calls that are longer...
A telephone company claims that the service calls which they receive are equally distributed among the...
A telephone company claims that the service calls which they receive are equally distributed among the five working days of the week. A survey of 120 120 randomly selected service calls was conducted. Is there enough evidence to refute the telephone company's claim that the number of service calls does not change from day-to-day? Days of the Week Mon Tue Wed Thu Fri Number of Calls 24 31 17 24 24 Step 1 of 10: State the null and alternative...
The accompanying table shows results of challenged referee calls in a major tennis tournament. Use a...
The accompanying table shows results of challenged referee calls in a major tennis tournament. Use a 0.05 significance level to test the claim that the gender of the tennis player is independent of whether a call is overturned. Was the Challenge to the Call Successful? yes no Men 297 848 Women 457 649 Determine the null and alternative hypotheses Determine the P-value of the test statistic. Use a 0.05 significance level to test the claim that the gender of the...
The P-value for a hypothesis test is shown. Use the P-value to decide whether to reject...
The P-value for a hypothesis test is shown. Use the P-value to decide whether to reject H when the level of significance is (a) a= 0.01, (b) a 0.05, and (c) a0.10. P 0.0749 (a) Do you reject or fail to reject Ho at the 0.01 level of significance? O A. Reject H because the P-value, 0.0749, is greater than a=0.01 O B. Fail to reject Ho because the P-value, 0.0749, is less than a = 0.01 O C. Reject...
The value obtained for the test statistic, z, in a one-mean 2-test is given. Whether the...
The value obtained for the test statistic, z, in a one-mean 2-test is given. Whether the test is two tailed, left tailed, or right tailed is also specified. For parts (a) and (b). determine the P-value and decide whether, at the 1% significance level, the data provide sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis. a. The test statistic in a two-tailed test is z= -1.42. The P-value is (Round to three cocimal places as...
Calculate the p-value for the following conditions and determine whether or not to reject the null...
Calculate the p-value for the following conditions and determine whether or not to reject the null hypothesis. a) one-tail (upper) test, z Subscript p=2.86, and alpha= 0.10 b) one-tail (lower) test, z Subscript p= -0.74, and alpha= 0.05 c) two-tail test, z Subscript p=-1.93, and alpha=0.05 d) two-tail test, z Subscript p=1.13, and alpha= 0.02 a) p-value= (Round to four decimal places as needed.) Determine whether or not to reject the null hypothesis. Choose the correct answer below. A. Do...
Calculate the p-value for the following conditions and determine whether or not to reject the null...
Calculate the p-value for the following conditions and determine whether or not to reject the null hypothesis. a) one-tail (upper) test, zp-2.51, and α-0.10 b) one-tail (lower) test, zp--1 .34, and α: 0.05 c) two-tail test, Zp-_ 1.89, and α: 0.05 d) two-tail test, z1.58, and a 0.02 Click here to view the first page of the standard normal table, Click here to view the second page of the standard normal table. a) p-value (Round to four decimal places as...
1. A survey was done by a car manufacturerc group of 500 individuals was asked whether they purch...
1. A survey was done by a car manufacturerc group of 500 individuals was asked whether they purchased their car because of its appearance, its performance ratings, or its fixed price (no negotiating). The given in the following table: results are COST 35 65 OWNER/CRITERIA PERFORMANCE 50 170 APPEARANCE Male Female 100 80 (a) Compute the expected frequency for each entry tate the null and alternative hypotheses if you were to test whether there difference in the proportions using the...
24) The table below shows results since 2006 of challenged referee calls in the U.S. Open (Tennis). Use a 0.05 significance level to test the claim that the gender of the player is independent...
24) The table below shows results since 2006 of challenged referee calls in the U.S. Open (Tennis). Use a 0.05 significance level to test the claim that the gender of the player is independent of whether the call is overturned Was the challenge to the call successful? Yes No Men 421 991 Women 220 539 Please answer: State the null and alternative hypotheses Find the test statistic 3. 1. 2. Find the p-value 4. State a conclusion
24) The table...
Randi wants to know if at least 90% of the employees at her company are currently...
Randi wants to know if at least 90% of the employees at her company are currently enrolled in a health insurance plan. She randomly samples 500 employees and finds that 459 of them are currently enrolled in a plan. Randi conducts a one-proportion hypothesis test at the 5% significance level, to test whether the true proportion of employees enrolled in a plan at this company is greater than 90%. For this test: H0:p=0.9; Ha:p>0.9, which is a right-tailed test. Use...
6 – Test Statistic LEARNING OBJECTIVE: Determine whether to reject a null hypothesis from a given p-value...
6 – Test Statistic LEARNING OBJECTIVE: Determine whether to reject a null hypothesis from a given p-value and significance level. BOOO > Select the correct statement. a.) Given a p-value of 0.01, and a significance level of 5%, you should reject the null hypothesis. b.) Given a p-value of 0.08, and a significance level of 2%, you should reject the null hypothesis. c.) Given a p-value of 0.06, and a significance level of 5%, you should reject the null hypothesis. d.) Given a p-value of...
The P-value for a hypothesis test is shown. Use the P-value to decide whether to reject H when the level of significance is (a) a= 0.01, (b) a 0.05, and (c) a0.10. P 0.0749 (a) Do you reject or fail to reject Ho at the 0.01 level of significance? O A. Reject H because the P-value, 0.0749, is greater than a=0.01 O B. Fail to reject Ho because the P-value, 0.0749, is less than a = 0.01 O C. Reject...
The value obtained for the test statistic, z, in a one-mean 2-test is given. Whether the test is two tailed, left tailed, or right tailed is also specified. For parts (a) and (b). determine the P-value and decide whether, at the 1% significance level, the data provide sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis. a. The test statistic in a two-tailed test is z= -1.42. The P-value is (Round to three cocimal places as...
Calculate the p-value for the following conditions and determine whether or not to reject the null hypothesis. a) one-tail (upper) test, zp-2.51, and α-0.10 b) one-tail (lower) test, zp--1 .34, and α: 0.05 c) two-tail test, Zp-_ 1.89, and α: 0.05 d) two-tail test, z1.58, and a 0.02 Click here to view the first page of the standard normal table, Click here to view the second page of the standard normal table. a) p-value (Round to four decimal places as...
1. A survey was done by a car manufacturerc group of 500 individuals was asked whether they purchased their car because of its appearance, its performance ratings, or its fixed price (no negotiating). The given in the following table: results are COST 35 65 OWNER/CRITERIA PERFORMANCE 50 170 APPEARANCE Male Female 100 80 (a) Compute the expected frequency for each entry tate the null and alternative hypotheses if you were to test whether there difference in the proportions using the...
24) The table below shows results since 2006 of challenged referee calls in the U.S. Open (Tennis). Use a 0.05 significance level to test the claim that the gender of the player is independent of whether the call is overturned Was the challenge to the call successful? Yes No Men 421 991 Women 220 539 Please answer: State the null and alternative hypotheses Find the test statistic 3. 1. 2. Find the p-value 4. State a conclusion
24) The table...
6 – Test Statistic LEARNING OBJECTIVE: Determine whether to reject a null hypothesis from a given p-value and significance level. BOOO > Select the correct statement. a.) Given a p-value of 0.01, and a significance level of 5%, you should reject the null hypothesis. b.) Given a p-value of 0.08, and a significance level of 2%, you should reject the null hypothesis. c.) Given a p-value of 0.06, and a significance level of 5%, you should reject the null hypothesis. d.) Given a p-value of...
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