1 If you are conducting a test of hypothesis to see if you c

1: If you are conducting a test of hypothesis to see if you can claim Brand X light bulbs and Brand Y light bulbs have different average lifetimes, which of the following alternate hypotheses would you use?

Ha: X Y

Ha: X < Y

Ha: X = Y

Ha: X > Y

2:

If the p-value for a test of hypothesis is 0.07 and = 0.05, what should you do?

Reject Ha.

Reject H0 in favor of Ha.

Accept H0.

Do not reject H0.

3: How do you know your answer to 2 is correct?

Solution

Q1.
Ha: X Y

to contradict NULL, Alternative always defined with not equal

Q2.

Accept H0 OR Do not reject Ho

Q3.

When P Cal>Ptab, we always Accept the NULL