[Objective: Conduct a hypothesis test on two independent samples] A researcher wants to know whether athletic women are more flexible than non-athletic women. For this experiment, a woman who exercised vigorously at least four times per week was considered "athletic". Flexibility is measured in inches on a sit & reach box. A researcher tested his claim using the following summary statistics:

Assume that all conditions for testing have been met.
; At the 1% significance level, state your decision regarding the null hypothesis and your conclusion about the original claim.
A) Fail to reject the null hypothesis; there is not strong enough evidence to suggest that athletic women are more flexible, on average, than non-athletic women.
B) Reject the null hypothesis; there is strong evidence to suggest that athletic women are more flexible, on average, than non-athletic women.
C) Reject the null hypothesis; there is strong evidence to suggest that non-athletic women are more flexible, on average, than athletic women.
D) Fail to reject the null hypothesis; there is strong evidence to suggest that non-athletic women are more flexible, on average, than athletic women.

Question

[Objective: Conduct a hypothesis test on two independent samples] A researcher wants to know whether athletic women are more flexible than non-athletic women. For this experiment, a woman who exercised vigorously at least four times per week was considered "athletic". Flexibility is measured in inches on a sit & reach box. A researcher tested his claim using the following summary statistics:

Assume that all conditions for testing have been met.

; At the 1% significance level, state your decision regarding the null hypothesis and your conclusion about the original claim.

Assume that all conditions for testing have been met. 
; At the 1% significance level, state your decision regarding the null hypothesis and your conclusion about the original claim.
A) Fail to reject the null hypothesis; there is not strong enough evidence to suggest that athletic women are more flexible, on average, than non-athletic women. 
B) Reject the null hypothesis; there is strong evidence to suggest that athletic women are more flexible, on average, than non-athletic women. 
C) Reject the null hypothesis; there is strong evidence to suggest that non-athletic women are more flexible, on average, than athletic women. 
D) Fail to reject the null hypothesis; there is strong evidence to suggest that non-athletic women are more flexible, on average, than athletic women.

Quizplus · Accepted Answer

The Answer of [Objective: Conduct a hypothesis test on two independent samples] A researcher wants to know whether athletic women are more flexible than non-athletic women. For this experiment, a woman who exercised vigorously at least four times per week was considered "athletic". Flexibility is measured in inches on a sit & reach box. A researcher tested his claim using the following summary statistics:

Assume that all conditions for testing have been met. 
; At the 1% significance level, state your decision regarding the null hypothesis and your conclusion about the original claim.
A) Fail to reject the null hypothesis; there is not strong enough evidence to suggest that athletic women are more flexible, on average, than non-athletic women. 
B) Reject the null hypothesis; there is strong evidence to suggest that athletic women are more flexible, on average, than non-athletic women. 
C) Reject the null hypothesis; there is strong evidence to suggest that non-athletic women are more flexible, on average, than athletic women. 
D) Fail to reject the null hypothesis; there is strong evidence to suggest that non-athletic women are more flexible, on average, than athletic women.

[Objective: Conduct a Hypothesis Test on Two Independent Samples] a Researcher