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Question 1 of18 0/1 E View Policies Show Attempt History Current Attempt in Progress X Your answer is incorrect. The p-value is the probability of a statistic being at most as extreme as the observed value when H, is true. 0 the probability of a statistic being at least as extreme as the observed value when H0 is true. 0 the probability that the null hypothesis is true. 0 the probability that the alternative hypothesis is true. 0 the probability of a statistic being at most as extreme as the observed value when H0 is false. eTextbook and Media Question 2 of 18 - I1 315 View Policies Current Attempt in Progress The customer help center in your company receives calls from customers who need help with some of the customized software solutions your company provides. Your company claims that the average waiting time is 7 minutes at the busiest time, from 8 am. to 10 am, Monday through Thursday. One of your main clients has recently complained that every time she calls during the busy hours, the waiting time exceeds 7 minutes. You conduct a statistical study to determine the average waiting time with a sample of 35 calls for which you obtain an average waiting time of 8.15 minutes. If the population standard deviation is known to be 4.2 minutes, and c1 = 0.05, the appropriate decision is to 0 reduce the sample size O fail to reject the 7-minute average waiting time claim 0 reject the 7-minute claim 0 maintain status quo 0 increase the sample size eTextbook and Media Question 3 of 18 0 [1 E View Policies Show Attempt History Current Attempt in Progress Consider the following null and alternative hypotheses. Ho:,u 567 Hazu>67 These hypotheses Question 12 of 18 0/1 View Policies Show Attempt History Current Attempt in Progress * Your answer is incorrect. In performing hypothesis tests about the population mean, if the population standard deviation is not known, a t test can be used to test the mean if O n is small O the sample is random O the population mean is known O the population is chi-square distributed O the population is normally distributed e Textbook and Media Save for Later Attempts: 1 of 2 used Submit AnswerQuestion 13 of18 _/1 :: View Policies Current Attempt in Progress The local oil changing business is very busy on Saturday mornings and is considering expanding. A national study of similar businesses reported the mean number of customers waiting to have their oil changed on Saturday morning is 3.6. Suppose the local oil changing business owner, wants to perform a hypothesis test. The null hypothesis is the population mean is 3.6 and the alternative hypothesis that the population mean is not equal to 3.6. The owner takes a random sample of 16 Saturday mornings during the past year and determines the sample mean is 4.2 and the sample standard deviation is 1.4. It can be assumed that the population is normally distributed. The observed "t" value for this problem is O 1.33 O 0.43 O 0.71 O 1.71 O 0.05 eTextbook and Media Save for Later Attempts: 0 of 2 used