The average amount of money that people spend at Don Mcalds fast food place is $7.2500 with a standard deviation of $2.0000.48 customers are randomly selected. Please answer the following
questions, and round all answers to 4 decimal places where possible and assume a normal
distribution.
a. What is the distribution of X? X - NG
b. What is the distribution of ?ī -NG
c. What is the distribution of S x? _ ~-
d. What is the probability that one randomly selected customer will spend more than $7.1470?
e. For the 48 customers, find the probability that their average spent is more than $7.1470.
f. Find the probability that the randomly selected 48 customers will spend less than $343.0560.
g. For part e) and f), is the assumption of normal necessary? Yes No
h. The owner of Don Mcalds gives a coupon for a free sundae to the 4% of all groups of 48
people who spend the most money. At least how much must a group of 48 spend in total to
get the free sundae? $