“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”. I need  (e) (f) answer

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“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.

 

  1. (a)  What is the probability that a customer stays in the shop for more than 3 hours?

  2. (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.

  3. (c)  Find the average, median and standard deviation of the amount of money a customer spends in the shop.

  4. (d)  For a customer stays in the shop for 3 hours, how much he / she needs to pay?

  5. (e)  There are 15% of all customers would pay less than $k. Find the value of k by using your answer in

    part (b).

  6. (f)  Write a simple summary about the spending of a customer in “FunBakery”.

I need  (e) (f) answer

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