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Can I get the answers with answers? Need ASAP. With customers using lines at its various cashiers, a store finds that the standard deviation for

Can I get the answers with answers? Need ASAP.

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With customers using lines at its various cashiers, a store finds that the standard deviation for normally distributed waiting times for customers on Friday afternoon is 6.6 minutes. The customers however believe otherwise that the standard deviation is a lot more. A zealous consumer advocate conducts a random sample of 27 customers and finds that the waiting times for customers have a standard deviation of 9.5 minutes. With a significance level of 1%, conduct a hypothesis test on whether the waiting times for customers have a standard deviation of more than 6.6 minutes. a) What are the null and alternative hypotheses? O Ho: 02 = 6.62 Ha: 52 > 6.52 O H0: 02 6.62 Hi: 02 : 6.62 h) Calculate the )6 test statistic. Your answers should be accurate to at least three decimal places. lTest Statistic: 0 I 1:) Compute the p-value. Your answers should be accurate to at least four decimal places. lPvalue: D a) State your conclusion. 0 At a 1% level of significance, from the data collected, there is insufcient evidence to conclude that the waiting times for customers have a higher standard deviation than 6.6 minutes. 0 At a 1% level of significance, from the data collected, there is sufficient evidence to conclude that the waiting times for customers have a lower standard deviation than 6.6 minutes. 0 At a 1% level of significance, from the data collected, there is insufcient evidence to conclude that the waiting times for customers have a lower standard deviation than 6.6 minutes. 0 At a 1% level of significance, from the data collected, there is sufficient evidence to conclude that the waiting times for customers have a higher standard deviation than 6.6 minutes

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