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 87.3 seconds. A manager devises a new 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 selected orders. The wait times are provided in the table to the right. Complete parts (a) and (b) below. 103.3 81.3 69.8 95.4 59.9 85.9 73.8 72.2 67.1 81.3 Click the icon to view the table of correlation coefficient critical values. (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 sample correlation coefficient is known to be e=0.983 Are the conditions for testing the hypothesis satisfied? ▼ No, Yes, the conditions ▼ are are not satisfied. The normal probability plot ▼ is is not linear enough, since the correlation coefficient is ▼ greater less than the critical value.
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 87.3 seconds. A manager devises a new 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 selected orders. The wait times are provided in the table to the right. Complete parts (a) and (b) below. 103.3 81.3 69.8 95.4 59.9 85.9 73.8 72.2 67.1 81.3 Click the icon to view the table of correlation coefficient critical values. (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 sample correlation coefficient is known to be e=0.983 Are the conditions for testing the hypothesis satisfied? ▼ No, Yes, the conditions ▼ are are not satisfied. The normal probability plot ▼ is is not linear enough, since the correlation coefficient is ▼ greater less than the critical value.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter2: The Integers
Section2.7: Introduction To Coding Theory (optional)
Problem 8E: Suppose the probability of incorrectly transmitting a single bit is . Compute the probability of...
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Question
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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
87.3
seconds. A manager devises a new 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 selected orders. The wait times are provided in the table to the right. Complete parts (a) and (b) below. |
103.3
|
81.3
|
|
|
69.8
|
95.4
|
|
|
|
59.9
|
85.9
|
|
|
|
73.8
|
72.2
|
|
|
|
67.1
|
81.3
|
|
Click the icon to view the table of correlation coefficient critical values.
(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 sample correlation coefficient is known to be
e=0.983
Are the conditions for testing the hypothesis satisfied?|
▼
No,
Yes,
▼
are
are not
▼
is
is not
▼
greater
less
|
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