[Solved] The Following Are the Competing Hypotheses and the Relevant Summary

A two-tailed test is used to determine if two population variances differ.The null hypothesis takes the form H₀ A) . B) . C) . D)

The result of placing a larger sample variance in the numerator of the test statistic allows us to A) focus only on the right tail of the distribution. B) arrive at a more accurate statistic value. C) focus only on the left tail of the distribution. D) determine if the distribution is symmetric.

Construct a 95% confidence interval for the ratios of two population variances.The random samples of n₁ = 9 and n₂ = 11 with sample variances of = 500 and = 250,respectively.Assume that the samples were drawn from a normal population. A) [0.50,2.00] B) [0.52,8.60] C) [0.25,1.41] D) [0.44,4.30]

The following are the competing hypotheses and the relevant summary statistics . . Which of the following statements is correct,regarding the assumptions for conducting the hypothesis test? A) The samples are drawn from not normally distributed population. B) The samples are dependent and taken from normally distributed population. C) The difference of the sample variances is used to test the hypotheses. D) The samples are independent and taken from normally distributed population.

The following are the competing hypotheses and the relevant summary statistics: . Which of the following is the critical value at the 5% significance level? A) 3.02 B) 3.14 C) 3.23 D) 3.39

Consider the expected returns (in percent)from two investment options.Beth wants to determine if investment 1 has a lower variance.Use the following summary statistics. Which of the following are the competing hypotheses for this test? A) B) C) D)

Consider the expected returns (in percent)from the two investment options.Beth claims that the variances of the returns for the two investments differ.Use the following data to arrive at the results. Which of the following is the correct p-value? A) 0.2873 B) 0.7127 C) 0.3564 D) 0.6436

Consider the expected returns (in percent)from the two investment options.Beth claims that the variances of the returns for the two investments differ.Use the following data to arrive at the results. Test Beth's claim at the 5% significance level.Which of the following is the correct conclusion? A) p-value = 0.7127 >α = 0.05;Beth's claim is correct. B) p-value = 0.7127 >α = 0.05;Beth's claim is wrong. C) p-value = 0.7127 <α = 0.05;Beth's claim is wrong. D) p-value = 0.7127 <α = 0.05;Beth's claim is correct.

Amie Jackson,a manager at Sigma travel services,makes every effort to ensure that customers attempting to make online reservations do not have to wait too long to complete the reservation process.The travel website is open for reservations 24 hours a day,and Amie regularly checks the website for the waiting time to maintain consistency in service.She uses the following independently drawn samples of wait time during two peak hours,morning 8a.m.to 10 a.m.and evening 7p.m.to 9p.m. ,for the analysis.Assume that wait times are normally distributed. Which of the following is the 95% confidence interval for the ratio of the population variances? A) [1.02,8.55] B) [1.00,8.73] C) [0.99,8.83] D) [1.19,7.34]

Amie Jackson,a manager at Sigma travel services,makes every effort to ensure that customers attempting to make online reservations do not have to wait too long to complete the reservation process.The travel website is open for reservations 24 hours a day,and Amie regularly checks the website for the waiting time to maintain consistency in service.She uses the following independently drawn samples of wait time during two peak hours,morning 8a.m.to 10 a.m.and evening 7p.m.to 9p.m. ,for the analysis.Assume that wait times are normally distributed. Construct a 90% confidence interval and test if the ratio of the population variances differs from one at the 10% significance level.Which of the following outcomes supports the test? A) [1.47,5.99].The ratio of the population variances differs from one at the 10% significance level. B) [1.19,7.35].The ratio of the population variances differs from one at the 10% significance level. C) [1.47,5.99].The ratio of the population variances does not differ from one at the 10% significance level. D) [1.19,7.35].The ratio of the population variances does not differ from one at the 10% significance level.