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mylab.pearson.com/Student/PlayerTest.aspx?testld=239405709¢erwin=yes GZ Math 159-14 Spring 2022 JOU HAN HUANG 04/18/22 3:59 PM ? Quiz: Chapter 8 Quiz Question 5 of 10 This quiz: 10 point(s)
mylab.pearson.com/Student/PlayerTest.aspx?testld=239405709¢erwin=yes GZ Math 159-14 Spring 2022 JOU HAN HUANG 04/18/22 3:59 PM ? Quiz: Chapter 8 Quiz Question 5 of 10 This quiz: 10 point(s) possible Resume later This question: 1 point(s) possible Submit quiz A poll of 1140 teens aged 13 to 17 showed that 53% of them have made new friends online. Use a 0.10 significance level to test the claim that half of all teens have made new friends online. Use the P-value method. Use the normal distribution as an approximation to the binomial distribution. Let p denote the population proportion of all teens aged 13 to 17 who have made new friends online. Identify the null and alternative hypotheses. Ho : p = 0 H1 : p * 0 (Type integers or decimals. Do not round.) Identify the test statistic. Z = 0 (Round to two decimal places as needed.) Identify the P-value. P-value = 0 (Round to three decimal places as needed.) State the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. Accept the null hypothesis. There is not sufficient evidence to warrant rejection of the claim that half of all teens have made new friends online. Statcrunch Nextmylab.pearson.com/Student/PlayerTest.aspx?testld=239405709¢erwin=yes GZ Math 159-14 Spring 2022 JOU HAN HUANG 04/18/22 4:00 PM Quiz: Chapter 8 Quiz Question 6 of 10 This quiz: 10 point(s) possible Resume later This question: 1 point(s) possible Submit quiz A data set includes data from student evaluations of courses. The summary statistics are n = 94, x = 4.11, s = 0.66. Use a 0.05 significance level to test the claim that the population of student course evaluations has a mean equal to 4.25. 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 # 4.25 O B. Ho: H = 4.25 H1: H =4.25 Hy : H > 4.25 O C. Ho: H = 4.25 O D. Ho: H = 4.25 H1: H
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