Question: Hypothesis tests regarding a parameter question I need help solving The mean waiting time at the drive-through of a fast-food restaurant from the time an

Hypothesis tests regarding a parameter question I need help solving

Hypothesis tests regarding a parameter question I need help solving The mean

The mean waiting time at the drive-through of a fast-food restaurant from the time an order is placed to the time the order is received is 85.8 seconds 107 3 79.4 A manager devises a new drive-through system that she believes will decrease wait time. As a test, she initiates the new system at her restaurant and 66 8 95.4 measures the wait time for 10 randomly selected orders. The wait times are provided in the table to the right. Complete parts (a) and (b) below 56 2 84.6 76.3 70.1 65.9 780 Click the icon to view the table of correlation coefficient critical values. Time (sec) (b) Is the new system effective? Conduct a hypothesis test using the P-value approach and a level of significance of a = 0.1 First determine the appropriate hypotheses. Ho 85 8 Hy 785.8 Find the test statistic. to = 0 (Round to two decimal places as needed.) Find the P-value. The P-value is (Round to three decimal places as needed.) Use the a = 0.1 level of significance. What can be concluded from the hypothesis test? O A. The P-value is greater than the level of significance so there is sufficient evidence to conclude the new system is effective O B. The P-value is greater than the level of significance so there is not sufficient evidence to conclude the new system is effective. O C. The P-value is less than the level of significance so there is sufficient evidence to conclude the new system is effective. O D. The P-value is less than the level of significance so there is not sufficient evidence to conclude the new system is effective

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