The average amount of money that people spend at
Don Mcalds fast food place is $7.2300 with a standard
deviation of $1.5000. 45 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 - N(
b. What is the distribution of x? X -N(
c. What is the distribution of
x ~N(
d. What is the probability that one randomly
selected customer will spend more than
$6.9546?
e. For the 45 customers, find the probability that
their average spent is more than $6.9546.
f. Find the probability that the randomly selected
45 customers will spend more than $312.9570.
g. For part e) and f), is the assumption of normal
necessary? O NoO Yes
h. The owner of Don Mcalds gives a coupon for a
free sundae to the 5% of all groups of 45 people
who spend the most money. At least how much
must a group of 45 spend in total to get the
free sundae? $