Author Question: The amount of time single men and women spend on house work is measured for 15 single women and 25 ... (Read 131 times)

renzo156 · **on:** Jul 24, 2018

The amount of time single men and women spend on house work is measured for 15 single women and 25 single men. For the women the mean was 7 hours/week with a standard deviation of 1.5 . For the men the mean was 4.5 hours/week with a standard deviation of 1.1 . What is the value of the pooled standard deviation for the difference in mean time spent on housework between single men and women?
a. 1.30
b. 0.45
c. 1.59
d. 1.26

Question 2

For each study, decide if the two samples are independent samples or paired samples. A group of 50 students had their blood pressures measured before and after watching a movie containing violence. The mean blood pressure before the movie was compared with the mean pressure after the movie.
a. Independent samples
b. Paired samples