Hypothesis Testing for the Mean

Question 1

What is a hypothesis

Answer 1

A hypothesis is a claim about a population parameter

Question 2

Null Hypothesis

Answer 2

The Status Quo. Always = sign

Question 3

What do you start with

Answer 3

Assume the Null Hypothesis is TRUE and try to disprove it.

Question 4

When do you reject the Null Hypothesis

Answer 4

If P-value is low reject Ho

Question 5

If P-value is less than 0.05

Answer 5

Reject Ho

Question 6

Alternative Hypothesis

Answer 6

The opposite of the Null Hypothesis

Question 7

What signs does the Alternative Hypothesis have in it

Answer 7

Never contains the “=” sign. It contains ≠ or > or <

Question 8

Central Limit Theorem

Answer 8

If the sample size is greater than 30, the sample is approximately normally distributed.

Question 9

Level of Significance

Answer 9

0.05 - Alpha is 5%

Question 10

One-Tailed

Answer 10

Divide p-value (sig) by 2

Question 11

If P-value is > 0.05

Answer 11

Fail to reject Ho

Question 12

Type 1 Error

Answer 12

We may have rejected the null hypothesis, when the null hypothesis could have been true

Question 13

Type 2 Error

Answer 13

We may have not rejected the null hypothesis, when the null hypothesis may have been false