The time required for an automotive center to complete an oil change service on an automobile approximately follows a normal distribution, with a mean of 15 minutes and a standard deviation of 3 minutes. (a) The automotive center guarantees customers that the service will take no longer than 20 minutes. If it does take longer, the customer will receive the service for half-price. What percent of customers receiv service for half-price? (b) If the automotive center does not want to give the discount to more than 3% of its customers, how long should it make the guaranteed time limit? Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) The percent of customers that receive the service for half-price is 4.75 %. (Round to two decimal places as needed.) (b) The guaranteed time limit is minutes. (Round up to the nearest minute.)

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Part B. the guaranteed time limit is how many minutes?

The time required for an automotive center to complete an oil change service on an automobile approximately follows a normal distribution, with a mean of 15 minutes and a standard deviation of 3 minutes.
(a) The automotive center guarantees customers that the service will take no longer than 20 minutes. If it does take longer, the customer will receive the service for half-price. What percent of customers receive the
service for half-price?
(b) If the automotive center does not want to give the discount to more than 3% of its customers, how long should it make the guaranteed time limit?
Click here to view the standard normal distribution table (page 1).
Click here to view the standard normal distribution.table (page 2).
(a) The percent of customers that receive the service for half-price is 4.75 %.
(Round to two decimal places as needed.)
(b) The guaranteed time limit is minutes.
(Round up to the nearest minute.)
Enter your answer in the answer box and then click Check Answer.
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W
APR
23
TA
F12
F10
F11
F8
F9
888
F4
F7
吕口 F3
F6
F5
esc
F2
F1
&
del
#3
7
2
3
4
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36
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option
B
2.
Transcribed Image Text:The time required for an automotive center to complete an oil change service on an automobile approximately follows a normal distribution, with a mean of 15 minutes and a standard deviation of 3 minutes. (a) The automotive center guarantees customers that the service will take no longer than 20 minutes. If it does take longer, the customer will receive the service for half-price. What percent of customers receive the service for half-price? (b) If the automotive center does not want to give the discount to more than 3% of its customers, how long should it make the guaranteed time limit? Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution.table (page 2). (a) The percent of customers that receive the service for half-price is 4.75 %. (Round to two decimal places as needed.) (b) The guaranteed time limit is minutes. (Round up to the nearest minute.) Enter your answer in the answer box and then click Check Answer. Check Answer Clear All All parts showing W APR 23 TA F12 F10 F11 F8 F9 888 F4 F7 吕口 F3 F6 F5 esc F2 F1 & del #3 7 2 3 4 E F G H. K A C V N 36 36 mond option B 2.
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