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A confidence interval for the difference in the mean time for female (Sample 1) and male...

A confidence interval for the difference in the mean time for female (Sample 1) and male (Sample 2) students to complete a statistics test was constructed using independent random samples: −0.5 minutes < µ1 − µ2 < 1.3 minutes What does the confidence interval suggest about the difference in length between male and female test completion times?

A. Male students take longer to complete a statistics test.

B. Female students take longer to complete a statistics test.

C. Male and female students complete statistics tests in the same amount of time

D. The time to complete the statistics tests for male and female students could be the same.

math   Statistics-And-Probability   
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Answer #1

We have given confidence interval is (-0.5, 1.3)

0 is between the above confidence interval.

Therefore, we fail to reject H0

D. The time to complete the statistics tests for male and female students could be the same.
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