Vaiting 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 86 4 seconds. A manager devises a ew drive-through system that he believes will decrease wait time. As a test, he initiates the new system at his restaurant and measures the wait time for 10 randomly elected orders. The wait times are provided in the table to the right. Complete parts (a) and (b) below. Click the icon to view the table of correlation coefficient critical values. CHIED D than the critical value. In addition, a a) Because the sample size is small, the manager must verify that the wait time is normally distributed and the sample does not contain any outliers. The normal probability plot is shown below and the same correlation coefficient is known to be r=0.993. Are the conditions for testing the hypothesis satisfied? the conditions linear enough, since the correlation coefficient is satisfied The normal probability plot poxplot does not show any outliers. 101.6 69.0 57.5 76.1 64.1 A Expected z-score 2 1- 0- -1- 160 RE G 82.9 95.0 86.3 sol 305 70.3 87.2 Q Q G

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