Question

1.) What is the critical z value of a two sided test for alpha = .01?

A.) 2.33

B.) 2.57

C.) 0.004

D.) 0.040

2.) Mocha Joe has n = 23, a sample average of 1,000,000, and a sample standard deviation of 350,000. What t-value should Mocha Joe use for a 95% confidence interval?

A.) 1.960

B.) 2.064

C.) 2.069

D.) 2.074

3.) What is the center of a confidence interval?

A.) µ

B.) s

C.) x̄

D.) σ

4.) Which of these is a Type I error?

A.) Larry gets kicked out of the dinner party even though he didn't stain the chair

B.) Larry gets kicked out of the dinner party because he stained the chair

C.) Larry doesn't get kicked out of the dinner party because he didn't stain the chair

D.) Larry doesn't get kicked out of the dinner party even though he stained the chair

5.) Which of these is a Type II error?

A.) Larry gets kicked out of the dinner party even though he didn't stain the chair

B.) Larry gets kicked out of the dinner party because he stained the chair

C.) Larry doesn't get kicked out of the dinner party because he didn't stain the chair

D.) Larry doesn't get kicked out of the dinner party even though he stained the chair

Answer 1