Chapter 10 Hypothesis Testing

Question 0

What is a p-value?

Answer 0

It is the chance of something as extreme or more extreme than what we observed when the null hypothesis is true.

Question 1

What is a hypothesis test?

Answer 1

To asses the evidence provided by the data against a null hypothesis Ho in favour of the alternate hypothesis Ha

Question 2

If p - value is less than alpha…

(P-value < alpha)

?

Answer 2

We reject Ho at level alpha

Question 3

Falsely rejecting Ho (rejecting Ho when it is true) is…

Answer 3

A type I error

Question 4

Falsely accepting Ho (ie failing to reject Ho when it is false) is a …

Answer 4

Type II error

Question 5

Hypothesis measure ..?

Answer 5

Or are in terms of the population parameters of interest

Question 6

A test statistic …

Answer 6

With a widely known sampling distribution under the null.

Question 7

Extreme values of the test statistic are..

Answer 7

Taken as evidence against the null hypothesis in favour of the alternative hypothesis