A researcher was interested in whether the mean hours of sleep differed by sex. The table below contains summary statistics for males and females in her class. You are asked to test (use = 0.05) whether there is a difference in the mean hours of sleep by sex.

What are the hypothesis statements?

• H0: 1 = 2; HA: 1 2
• H0: 1 = 2; HA: 1 > 2
• H0: 1 = 2; HA: 1 < 2

What is the mean difference (male - female) for hours of sleep? Report answer to 2 decimal places

Which of the following is the Standard Error (SE)? During the calculation, carry 4 digits after the decimal, not including 0 (ie: 0.01234 OR 0.1234)

• 0.3093
• 0.3095
• 0.3097
• 0.3102

df_conservative (enter a whole number)=

Test statistic (enter into 3 decimal places)=

What is the p-value approximation?

What conclusion can we make?

• We reject the null hypothesis, and conclude that there is no significant difference in the mean hours of sleep between male and female college students.
• We reject the null hypothesis, and conclude that there is a significant difference in the mean hours of sleep between male and female college students.
• We do not reject the null hypothesis, and conclude that there is no significant difference in the mean hours of sleep between male and female college students.
• We reject the null hypothesis, and conclude that there is no significant difference in the mean hours of sleep between male and female college students.