HW 9.5 Score: 0/38 0/22 answered Question 18 Test the claim that the mean salary in a town is at most $68000. A random sample 44 salaries yields an average of $69031.17. Use a = 0.05, and assume that o = $1800. 1. The sample size restriction for this test is: O None needed since population is normally distributed O Need n 2 30 O Need at least 5 successes and 5 failures The hypotheses are: O Ho: M 2 68000; Ha: M 68000 O Ho:p 68000 O Ho:p = 68000; Ha:p # 68000 O Ho:M = 68000; Ha: M # 68000 2. This is a O left two right tailed test and the distribution used is O Z since testing a proportion O Z since o known O T since o not knownThe Degrees of Freedom are 5:2:- 44 '3' WA since this is a Z-test C' 43 3. The STS (round to 3 decimals} is: The P-value {round to 4 decimals} is: 4. The decision at o: = 0.05 is: Q Do not reject Ho since P g a: '33:? Reject Ho since P l} a: '31:? Reject Ho since P g a: '3' Do not reject Ho since P > o: The conclusion is: '3' There is sufficient evidence to support the claim that the mean saary is at most 568000 {:33 There is insufficient evidence to reject the claim that the mean salary is at most 568000 '13:? There is sufficient evidence to reject the claim that the mean salary is at most 568000 '13:? There is insufficient evidence to support the claim that the mean salary is at most $68000 HW 9.5 Score: 0/38 0/22 answered . Question 19 Test the claim that a population mean salary in a town is more than $59000. A random sample of 40 salaries yields x = $59452.21 and s = $1300. Use a = 0.01. 1. The population distribution requirement for this test is: O Need a normally distributed population since n 59000 O Ho: / 2 59000; Ha:p 59000 2. This is a O right two left tailed test and the distribution used is O T since o not known O Z since o known O Z since testing a proportionThe Degrees of Freedom are '33:? NA; this is a Z-test -"'II::- 39 ""3? 40 3. The STS (round to 3 decimals} is: The P-value (round to 4 decimals} is: 4. The decision at a: = 0.01 is: '13:? Do not reject Ho since P 32 a: '3' Do not reject Ho since P > a: '3' Reject Ho since P g or '33:? Reject Ho since P 2:" or The conclusion is: '33:} There is insufficient evidence to support the claim that the population mean salary is more than 559000 '33:} There is sufficient evidence to support the claim that the population mean salary is more than $59000 '33:? There is sufficient evidence to reject the claim that the popuation mean salary is more than 559000 '3' There is insufficient evidence to reject the claim that the population mean salary is more than $59000