serid=85668557&5cenario= 118unvoketype-et1&bookserver=18:0agenumber=v&.course d=svyeshnikova420618 displaycourseidesy (e) What is the percentile rank of an 18-ounce bag of Chips Ahoy! that contains...

Number 40 A B C

Extracted text: serid=85668557&5cenario= 118unvoketype-et1&bookserver=18:0agenumber=v&.course d=svyeshnikova420618 displaycourseidesy (e) What is the percentile rank of an 18-ounce bag of Chips Ahoy! that contains 1475 chocolate chips? () What is the percentile rank of an 18-ounce bag of Chips Ahoy! that contains 1050 chocolate chips? 40. Wendy's Drive-Through Fast-food restaurants spend quite bit of time studying the amount of time cars spend in their drive throughs. Certainly, the faster the cars get through the drive- through, the more the opportunity for making money. QSR Magazine studied drive-through times for fast-food restaurants and found Wendy's in the drive-through of 138.5 seconds. Assuming drive-through times are normally distributed with a standard deviation of 29 seconds, answer the following. (a) What is the probability that a randomly selected car will get through Wendy's drive-through in less than 100 seconds? (b) What is the probability that a randomly selected car will spend more than 160 seconds in Wendy's drive-through? (c) What proportion of cars spend between 2 and 3 minutes in Wendy's drive-through? (d) Would it be unusual for a car to spend more than 3 minutes in Wendy's drive-through? Why? 41. Gestation Period The lengths of human pregnancies are approximately normally distributed, with mean 266 days and standard deviation o =16 days. viation lthe best time, with a mean time spent ator is ately imes of lected (a) What proportion of pregnancies lasts more than 270 days? (b) What proportion of pregnancies lasts less than 250 days? (c) What proportion of pregnancies lasts between 240 and 280 days? (d) What is the probability that a randomly selected pregnancy lasts more than 280 days? lected lected 8 days?