Author Question: Type I error a. occurs when a true null hypothesis is rejected. b. is usually referred to as ... (Read 831 times)

tingc95 · **on:** Jun 29, 2018

Type I error
a. occurs when a true null hypothesis is rejected.
b. is usually referred to as significance level.
c. is symbolized by alpha ().
d. a, b, and c.
e. None of the above are correct.

Question 2

The one-tailed test is commonly used in marketing research because
a. there is typically some hypothesized or preferred direction to the outcome.
b. it is more powerful statistically than the two-tailed alternative.
c. it is easier to calculate than the two-tailed alternative.
d. Both a and b.
e. a, b, and c.