about their daily water intake. A graph of the data shows a roughly symmetric shape with no outliers. The figure below displays Minitab output for a one-sample interval t for the population mean. Is there convincing evidence at the 10% significance level that the blogger’s claim is incorrect? Use the confidence interval to justify your answer. The for a two-sided test of the null hypothesis = 10 is 0.06. P-value H0: μ (a) Does the 95% confidence interval for include 10? Why or why not? μ (b) Does the 90% confidence interval for include 10? Why or why not? μ Correct Answer (a) Yes, > 0.05. (b) No, since is < 0.10. P-value P-value The for a one-sided test of the null hypothesis = 15 is 0.03. P-value H0: μ (a) Does the 99% confidence interval for include 15? Why or why not? μ (b) Does the 95% confidence interval for include 15? Why or why not? μ An understanding of cockroach biology may lead to an effective Exercises 87 and 88 refer to the following setting. control strategy for these annoying insects. Researchers studying the absorption of sugar by insects feed a random
about their daily water intake. A graph of the data shows a roughly symmetric shape with no outliers. The figure below displays Minitab output for a one-sample t interval for the population mean. Is there convincing evidence at the 10% significance level that the blogger’s claim is incorrect? Use the confidence interval to justify your answer. The P-value for a two-sided test of the null hypothesis H0: μ = 10 is 0.06. (a) Does the 95% confidence interval for μ include 10? Why or why not? (b) Does the 90% confidence interval for μ include 10? Why or why not? Correct Answer (a) Yes, P-value > 0.05. (b) No, since P-value is < 0.10. The P-value for a one-sided test of the null hypothesis H0: μ = 15 is 0.03. (a) Does the 99% confidence interval for μ include 15? Why or why not? (b) Does the 95% confidence interval for μ include 15? Why or why not? Exercises 87 and 88 refer to the following setting. An understanding of cockroach biology may lead to an effective control strategy for these annoying insects. Researchers studying the absorption of sugar by insects feed a random
section_9.1_book_with_exercises.docx