Suppose the average tread-life of a certain brand of tire is 42,000 miles and that this mileage ...

Suppose the average tread-life of a certain brand of tire is 42,000 miles and that this mileage follows the exponential probability distribution. What is the probability that a randomly selected tire will have a tread-life of more than 40,000 miles?
 
  A) 0.1546
  B) 0.2410
  C) 0.3016
  D) 0.3858

Q. 2

The probability of a Type II error is denoted as _______.
 
  A) alpha
  B) beta
  C) sigma
  D) rho

Q. 3

The Tukey-Kramer multiple comparisons procedure allows us to examine each pair of sample means and to conclude whether or not their respective sample means differ for a one-way ANOVA.
 
  Indicate whether the statement is true or false

Q. 4

A Type II error occurs in hypothesis testing when we ___________________________.
 
  A) reject the alternative hypothesis and the alternative hypothesis is true
  B) fail to reject the alternative hypothesis and the alternative hypothesis is not true
  C) fail to reject the null hypothesis and the null hypothesis is not true
  D) reject the null hypothesis and the null hypothesis is true