Question

1. ___is the probability of a Type II error; and ___ is the probability of correctly rejecting a false null hypothesis.

1. 1-β; β
2. β; 1-β
3. α; β
4. β; α

2. A student hypothesized that girls in his class had the same blood pressure levels as boys. The probability value for his null hypothesis was 0.01. So he concluded that the blood pressures of the girls were the same as boys’. Which kind of mistake did he make?

1. Type I error
2. Type II error
3. Type I and Type II error
4. He did not make any mistake

3. When you conduct a hypothesis testing, at which of the following P-value, you feel least confident to reject the null hypothesis?

1. 0.99
2. 0.95
3. 0.05
4. 0.01

Answer 1

is the probability of a Type II error; and is the probability of correctly rejecting a false null hypothesis.

He made no mistake

0.99 p-value is least confident to reject the null hypothesis