The average amount of money spent for lunch per person in the college cafeteria is $6.59 and the standard deviation is $2.27. Suppose that 8 randomly selected lunch patrons are observed. Assume the distribution of money spent is normal, and round all answers to 4 decimal places where possible.

What is the distribution of
?
~ N(
6.59
Correct,
2.27
Correct)
What is the distribution of

?

~ N(
6.22
Incorrect,
)
For a single randomly selected lunch patron, find the probability that this patron's lunch cost is between $7.6861 and $8.3674.
For the group of 8 patrons, find the probability that the average lunch cost is between $7.6861 and $8.3674.
0.3984
Incorrect
For part d), is the assumption that the distribution is normal necessary? YesNo