1.
A poll of2.01? randomly selected edults showed that 95% of them own cell phones. The technology display below results from a test 01 the claim that 94% of adults own cell phones. Use the non'nal distribution as an approximation to the binomial distribution, and assume a 0.01 significance level to complete parts {a} through (e). Test of p=0.94 vs p#0.94 Sample X N Sample p 95% Cl Z-Value P-Value 1 1910 2,013' 0.046951 {0.934096335913106} 1.31 0.139 b. What is the test statistic? The test statistic is "Round to two decimal places as needed. )c. What is the P-value? The P-value is (Round to three decimal places as needed. d. What is the nul hypothesis and what do you conclude about it? Identify the null hypothesis.Choose the correct answer below. O A. Fail to reject the null hypothesis because the P.value is greater than the significance level, a. O B. Reject the null hypothesis because the P.value is less than or equal to the significance level, it. O C. Reject the null hypothesis because the P-value is greater than the significance level, a. O D. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, a. e. What is the final conclusion?In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to 6963 subjects randomly selected from an online group involved with ears. There were 1348 surveys returned. Use a 0.01 significance level to test the claim that the return rate is less than 20%. Use the P-value method and use the normal distribution as an approximation to the binomial distribution. Identify the null hypothesis and alternative hypothesis. O A. Ho: p = 0.2 O B. Ho: p #0.2 H1: p #0.2 H1: p = 0.2 O C. Ho: p = 0.2 O D. Ho: p > 0.2 H1: p 0.2 H1: p = 0.2In a recent court case it was found that during a period of 11 years 886 people were selected for grand jury duty and 43% of them were from the same ethnicity. Among the people eligible for grand jury duty, 79.5% were of this ethnicity. Use a 0.01 significance level to test the claim that the selection process is biased against allowing this ethnicity to sit on the grand jury. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method and the normal distribution as an approximation to the binomial distribution. Which of the following is the hypothesis test to be conducted? O A. Ho: p 0.795 O D. Ho: p =0.795 H1: p = 0.795 H1: p > 0.795 O E. Ho: p =0.795 OF. Ho: p #0.795 H1: p
