AP Stats: Unit 6 Interpretations

Question 1

Interpret Confidence Level

Answer 1

If I take many random samples and construct confidence intervals from each, about [CL]% of them will capture the true proportion [context].

Question 2

Interpret Confidence Interval

Answer 2

We are [CL]% confident that the interval from [lowest value] to [highest value] captures the true proportion [context]

Question 3

Interpret P-Value

Answer 3

Assuming that H0 is true (p=[value]), there is a [p-value] probability of getting a p^ of [p^ value] or more/less extreme just by chance.

Question 4

Conclusion of P-Value

Answer 4

Since the p-value of [p-value] is less than/greater than the significance level [sigma=sigma value], we reject/fail to reject H0. We do/don’t have convincing evidence that [H0 in context] is true.

Question 5

Type I Error

Answer 5

I find convincing evidence that [Ha in context] is true, but in reality [H0 in context] is true.

Question 6

Type II Error

Answer 6

I don’t find convincing evidence that [Ha in context] is true, but in reality [Ha in context] is true.

Question 7

Interpreting Power

Answer 7

If Ha is true [use specific value in context], there is a [power value] probability of finding convincing evidence to reject [H0 in context]

Question 8

What do you do if the P value is greater than the significance level?

Answer 8

You do not reject and you do not have convincing evidence

Question 9

What do you do if the P value is less than the significance level?

Answer 9

You reject and you do have convincing evidence