Homework: Week 15 Chapter 7 Part 3 of 3 Score: 0 of 1 Save A baseball team claims that the mean length of its games is at least 2.1 hours. State Ho and Ha in words and in symbols. Then determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed. Explain your reasoning. State the null hypothesis in words and in symbols. Choose the correct answer below. * A. The null hypothesis expressed in words is, "the mean length of a baseball team's games is at least 2.1 hours." The null hypothesis is expressed symbolically as, "Ho: ( 2 2.1." B. The null hypothesis expressed in words is, "the mean length of a baseball team's games is at most 2.1 hours." The null hypothesis is expressed symbolically as, "Ho: HS2.1." O C. The null hypothesis expressed in words is, "the mean length of a baseball team's games is 2.1 hours." The null hypothesis is expressed symbolically as, "Ho: ( = 2.1." O D. The null hypothesis expressed in words is, "the mean length of a baseball team's games is not 2.1 hours." The null hypothesis is expressed symbolically as, "Ho: H # 2.1." State the alternative hypothesis in words and in symbols. Choose the correct answer below. A. The alternative hypothesis expressed in words is, "the mean length of a baseball team's games is not 2.1 hours." The alternative hypothesis is expressed symbolically as, "Ha: ( #2.1." O B. The alternative hypothesis expressed in words is, "the mean length of a baseball team's games is 2.1 hours." The alternative hypothesis is expressed symbolically as, "Ha : H = 2.1." O C. The alternative hypothesis expressed in words is, "the mean length of a baseball team's games is more than 2.1 hours." The alternative hypothesis is expressed symbolically as, "Ha: [ > 2.1." D. The alternative hypothesis expressed in words is, "the mean length of a baseball team's games is less than 2.1 hours." The alternative hypothesis is expressed symbolically as, "Ha: H 50 O D. Ho: H 50 Calculate the standardized test statistic. The standardized test statistic is - 4.08 . (Round to two decimal places as needed.) Determine the critical value(s). Select the correct choice below and fill in the answer box to complete your choice. (Round to two decimal places as needed.) O A. The critical values are + O B. The critical value is Click to select and enter your answer(s) and then click Check Answer. Help Me Solve This View an Example Get More Help - Clear All Check AnswerE Homework: Week 15 Chapter 7 Question 11, 7.2.27-T HW Score: 47.69%, 6.2 of 13 points Part 1 of 4 Score: 0 of 1 Save Test the claim about the population mean, , at the given level of significance using the given sample statistics. Claim: p =50; a = 0.05; o = 3.26. Sample statistics: x = 49.3, n = 62 Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: H 50 09
