A weight loss center provided a loss for 72% of its participants.

Question

A weight loss center provided a loss for 72% of its participants. The center's leader decides to test a new weight loss strategy to see if it's better and receives a P-value of 0.23, based on the one-sided alternative "less". 

If a two-sided alternative was used for this test, how would this affect the p-value?

 

Group of answer choices

a) It would be the same as for the one-sided test.

b) It would be twice as large as for the one-sided test.

c) It would be half as large as for the one-sided test.

Answer 1

Because you are now dealing with both sides of the bell curve, you can cut the p in half, so p=.115