Assume that the following confidence interval for the difference in the mean time (in minutes) for male students to complete a statistics test (sample 1) and the mean time for female students to complete a statistics test (sample2) was constructed using independent simple random samples. $- 0.2 \text { minutes } < \mu _ { 1 } - \mu _ { 2 } < 2.7 \text { minutes }$ What does
The confidence interval suggest about the difference in length between male and female test completion times?

Question

Assume that the following confidence interval for the difference in the mean time (in minutes) for male students to complete a statistics test (sample 1) and the mean time for female students to complete a statistics test (sample2) was constructed using independent simple random samples. $- 0.2 \text { minutes } < \mu _ { 1 } - \mu _ { 2 } < 2.7 \text { minutes }$ 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) There is no difference in the length of time for statistics test completion between male and female students.

Quizplus · Accepted Answer

The confidence interval includes 0, which suggests that the true difference in mean time for male and female students to complete a statistics test could be 0. Therefore, we cannot conclude that there is a statistically significant difference in the length of time for statistics test completion between male and female students.

Assume That the Following Confidence Interval for the Difference in the Mean