Author Question: A very large logging operation has serious problems keeping their skidders operating properly. The ... (Read 158 times)

Pineapplelove6 · **on:** Jun 24, 2018

A very large logging operation has serious problems keeping their skidders operating properly. The equipment fails at the rate of 3 breakdowns every 48 hours. Assume that x is time between breakdowns and is exponentially distributed. The probability of two or less breakdowns in the next 48-hour period is:
a. 0.9672.
b. 0.0307.
c. 0.2231.
d. 0.7769.

Question 2

Fifty percent of all college students attend schools within 50 miles of their homes. In a sample of 500 college students, the probability that the sample proportion will be between 0.45 and 0.55 is:
a. 0.4875.
b. 0.9818.
c. 0.4909.
d. 0.9750.
e. 0.5000.