Author Question: Your high school graduating class had 564 members. Thirty-three percent of these are expected to ... (Read 128 times)

Collmarie · **on:** Jun 24, 2018

Your high school graduating class had 564 members. Thirty-three percent of these are expected to attend college. If the number of students who attend college follows the normal distribution, the probability that less than 160 will attend college is:
a. 0.3610.
b. 0.4900.
c. 0.0090.
d. 0.0832.
e. 0.2500

Question 2

The average number of customers that visited a particular store during the past year is 160 per day and a standard deviation of 25 customers per day. A random sample of 64 days is chosen from this population. The standard deviation of the sample mean equals:
a. 12.649.
b. 25.0.
c. 2.56.
d. 3.125.
e. 8.0