A very large logging operation has serious problems keeping their ...

[Pineapplelove6]

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.

[bbburns21]

Answer to Question 1

B

Answer to Question 2

D

[Pineapplelove6]

Excellent

[adammoses97]

Gracias!