**This is timed. Don't take longer than 2 hours to answer**

Explain how to perform a two-sample ttest for the difference between two population means. Question list l6 Which explanation below best describes how to perform the two-sample ttest? O Question 4 {:2- A. Determine the degrees of freedom. Specify the level of signicance. State the hypotheses and identify the claim. Find the critical value(s) and identify the rejection region(s). Find the standardized test statistic. Make a _ decision and interpret it in the context of the original claim. O Question 5 -":j:- B. State the hypotheses and identify the claim. Specify the level of signicance. Determine the degrees of freedom. Find the critical value(s) and identify the rejection region(s). Find the standardized test statistic. Make a decision and interpret it in the context of the original claim. O Question 6 (:2- 0. Find the standardized test statistic. State the hypotheses and identify the claim. Specify the level of signicance. Determine the degrees of freedom. Find the critical value(s) and identify the rejection region(s). Make a decision and interpret it in the context of the original claim. O Question 7 (:2- D. Find the critical value(s) and identify the rejection region(s). Specify the level of significance. State the hypotheses and identify the claim. Determine the degrees of freedom. Make a decision and interpret it in the context of the original claim. Find the standardized test statistic. O Question 8 O Question 9 O Question 10 A marine biologist claims that the mean length of mature female pink seaperch is different in fall and winter. A sample of Question list K 13 mature female pink seaperch collected in fall has a mean length of 109 millimeters and a standard deviation of 9 millimeters. A sample of 11 mature female pink seaperch collected in winter has a mean length of 105 millimeters and a standard deviation of 12 millimeters. At o = 0.05, can you support the marine biologist's claim? Assume the population O Question 6 variances are equal. Assume the samples are random and independent, and the populations are normally distributed. Complete parts (a) through (e) below. . . . O Question 7 (a) Identify the claim and state Ho and Ha- Which is the correct claim below? O Question 8 O A. "The mean length of mature female pink seaperch is greater in the fall than in the winter." O B. "The mean length of mature female pink seaperch is the same in fall and winter." O Question 9 O C. "The mean length of mature female pink seaperch is greater in the winter than in the fall." O D. "The mean length of mature female pink seaperch is different in fall and winter." O Question 10 What are Ho and Ha? The null hypothesis, Ho, is The alternative hypothesis, Ha, is O Question 11 Which hypothesis is the claim? O The null hypothesis, Ho Question 12 O The alternative hypothesis, HaA marine biologist claims that the mean length of mature female pink seaperch is different in fall and winter. A sample of Question list K 13 mature female pink seaperch collected in fall has a mean length of 109 millimeters and a standard deviation of 9 millimeters. A sample of 11 mature female pink seaperch collected in winter has a mean length of 105 millimeters and a standard deviation of 12 millimeters. At a = 0.05, can you support the marine biologist's claim? Assume the population O Question 6 variances are equal. Assume the samples are random and independent, and the populations are normally distributed. Complete parts (a) through (e) below. O Question 7 (a) Identify the claim and state Ho and Ha. Which is the correct claim below? O Question 8 O A. "The mean length of mature female pink seaperch is greater in the fall than in the winter." O B. "The mean length of mature female pink seaperch is the same in fall and winter." O Question 9 O C. "The mean length of mature female pink seaperch is greater in the winter than in the fall." O D. "The mean length of mature female pink seaperch is different in fall and winter." Question 10 What are Ho and Ha? The null hypothesis, Ho, is The alternative hypothesis, Ha, is O Question 11 Which hypothesis is the clai O The null hypothesis, H H1 = H2. O Question 12 O The alternative hypoth My SH2. (b) Find the critical value(s) ction region(s). H1 2 H2. Time Remaining: 02:24:03A marine biologist claims that the mean length of mature female pink seaperch is different in fall and winter. A sample of Question list K 13 mature female pink seaperch collected in fall has a mean length of 109 millimeters and a standard deviation of 9 millimeters. A sample of 11 mature female pink seaperch collected in winter has a mean length of 105 millimeters and a standard deviation of 12 millimeters. At a = 0.05, can you support the marine biologist's claim? Assume the population O Question 6 variances are equal. Assume the samples are random and independent, and the populations are normally distributed. Complete parts (a) through (e) below. O Question 7 (a) Identify the claim and state Ho and Ha. Which is the correct claim below? O Question 8 O A. "The mean length of mature female pink seaperch is greater in the fall than in the winter." O B. "The mean length of mature female pink seaperch is the same in fall and winter." O Question 9 O C. "The mean length of mature female pink seaperch is greater in the winter than in the fall." O D. "The mean length of mature female pink seaperch is different in fall and winter." O Question 10 What are Ho and Ha? The null hypothesis, Ho, is The alternative hypothesis, Ha, is O Question 11 Which hypothesis is the claim? The null hypothesis, Ho My # H2 . O Question 12 O The alternative hypothesis, Ha H1 > H2. (b) Find the critical value(s) and identify the rejection region(s). H1 - H2.Question list 0 Question 6 0 Question 7 0 Question 8 0 Question 9 0 Question 10 0 Question 11 0 Question 12 I A marine biologist claims that the mean length of mature female pink seaperch is different in fall and winter. A sample of 13 mature female pink seaperch collected in fall has a mean length of 109 millimeters and a standard deviation of 9 millimeters. Asample of 11 mature female pink seaperch collected in winter has a mean length of 105 millimeters and a standard deviation of 12 millimeters. At or = 0.05, can you support the marine biologist's claim? Assume the population variances are equal. Assume the samples are random and independent, and the populations are normally distributed. Complete parts (a) through (e) below. (b) Find the critical value(s) and identify the rejection region(s). Enter the critical value(s) below. E (Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.) Select the correct rejection region(s) below. .13. A. t0 t0 (c) Find the standardized test statistic. t= E (Type an integer or decimal rounded to three decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. O Question 11 the null hypothesis. (e) Interpret the decision in the context of the original claim. O Question 12 At the 5% significance level, enough evidence to support the claim that the mean lengths of mature female pink seaperch are different in fall and winter.... (d) Decide whether to reject or fail to reject the null hypothesis. 0 Question 11 El the null hypothesis. 1 in the context of the original claim. 0 Question 12 , vel, |:| enough evidence to support the claim that the mean lengths of mature female Fail to re'ect . . | I int In fall and Winter. A - 7 Reject Time Remaining: 02:23:09 m Question 10 t= (Type an integer or de decimal places as needed.) (d) Decide whether to reject ypothesis. O Question 11 there is not the null hypoth there is (e) Interpret the decision in th I claim. O Question 12 At the 5% significance level, enough evidence to support the claim that the mean lengths of mature female pink seaperch are different in fall and winter. Time Remaining: 02:23:04 Next