“FunBakery” is a bakery shop that customers can use the facilities to bake cakes. According to the record,the duration a customer spends in the shop follows a normal distribution with mean 140 minutes and standarddeviation 18 minutes.(a) What is the probability that a customer stays in the shop for more than 3 hours?(b) There are 15% of all customers would stay in the shop for less than t minutes. Find the value of t. Roundup the answer to the next integer.The charge in “FunBakery” is $100 for the first hour and then $1.1 per extra minute.(c) Find the average, median and standard deviation of the amount of money a customer spends in the shop.(d) For a customer stays in the shop for 3 hours, how much he / she needs to pay?(e) There are 15% of all customers would pay less than $k. Find the value of k by using your answer inpart (b).(f) Write a simple summary about the spending of a customer in “FunBakery”
“FunBakery” is a bakery shop that customers can use the facilities to bake cakes. According to the record,
the duration a customer spends in the shop follows a normal distribution with mean 140 minutes and standard
deviation 18 minutes.
(a) What is the probability that a customer stays in the shop for more than 3 hours?
(b) There are 15% of all customers would stay in the shop for less than t minutes. Find the value of t. Round
up the answer to the next integer.
The charge in “FunBakery” is $100 for the first hour and then $1.1 per extra minute.
(c) Find the average, median and standard deviation of the amount of money a customer spends in the shop.
(d) For a customer stays in the shop for 3 hours, how much he / she needs to pay?
(e) There are 15% of all customers would pay less than $k. Find the value of k by using your answer in
part (b).
(f) Write a simple summary about the spending of a customer in “FunBakery”
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