Question

Let’s say that the null hypothesis H_o is that John’s car is safe to drive.

1. What is the alternative hypothesis H_a ?
2. Which statement below represents a Type II error?
3. Which of the following statement represent the Type I error?

1. John think the car may be safe when, in fact, it is not safe.
2. John thinks the car is safe when, in fact, the car is safe.
3. John thinks the car may not be safe when, in fact, it is not safe.
4. John thinks the car may not be safe when, in fact, it is not safe.

Put the numbers of the above four statement into the following table.

                              

decision	Null Hypothesis is true	Null hypothesis is false
Reject Ho
Do not reject Ho

Answer 1

a) Ha: John’s car is not safe to drive

b) John think the car may be safe when, in fact, it is not safe

c) John thinks the car may not be safe when, in fact, it is safe.

decision	Null Hypothesis is true	Null hypothesis is false
Reject Ho	John thinks the car may not be safe when, in fact, it is safe	John thinks the car may not be safe when, in fact, it is not safe.
Do not reject Ho	John thinks the car is safe when, in fact, the car is safe.	John think the car may be safe when, in fact, it is not safe