omework: Practice Final Exam core: 0 of 1 pt 58 of 105 (61 complete) HW Score: 5
ID: 3374588 • Letter: O
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omework: Practice Final Exam core: 0 of 1 pt 58 of 105 (61 complete) HW Score: 55.52%, 58.3 of 10 x7.2.51 ?avestion Help Tha time required for an automotve center to complete an oll dhange service on an automobile approximately follows a normal distribution, with a mesn of 19 minut and a standard deviation of 3 minutes. (a) The automotive cenler guarantees customers that the service wil take no longer than 30 minutes.iIit does take longer, the customer wil r eoeive the service for half-price. What percent of customers receive the service for half-prioe? (b) lfthe automotive center does not want to give te dscourt to more than 4% ofbswtorners, hw long should make the guaranteedtmo int? Cick here to view the standard nomal distribution table (page 1) (a)The percent of ostomers that receive the servio tr hat prooisC& (Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer Clear Al Map and direct Vew hotel Message hote r28 PayPa Your receipt for payment to TripAdvi Payipal checkout Jun 4, 2018-Jun 8, 2018 ernande Alamillo Question 74 10/1 Question 75?1)Explanation / Answer
a) P(x>20)
= P(z>(20-19)/3)
= P(z>0.33)
= 36.94%
b) NORMSINV(1-0.96)*3+19
= 24.25
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