Question

Question 17 4 pts A researcher was interested in comparing the amount of time spent watching television by women and by men. Independent simple random samples of 14 women and 17 men were selected, and each person was asked how many hours he or she had watched television during the previous week. The summary statistics are shown in the chart below. The following 99% confidence interval was obtained for the difference between the mean amount of time spent watching television for women and the mean amount of time spent watching television for men: -5.73 hrs < 1-2 < 4.13 hrs. What does the confidence interval suggest about the population means? Women Men *1- 129 m 2 - 137 has 1-3.9 lus 52 - 5.2 lus nj-14 12-17 O The confidence interval limits include O which suggests that the two population means are unlikely to be equal. There appears to be a signiñcant difference between the mean amount of time spent watching television for women and the mean amount of time spent watching television for men The confidence interval includes only negative values which suggests that the mean amount of time spent watching television for women is smaller than the mean amount of time spent watching television for men O The confidence interval limits include which suggests that the two population means might be equal There does not appear to be a significant difference between the mean amount of time spent watching television for women and the mean amount of time spent watching television for men The confidence interval includes only positive values which suggests that the mean amount of time spent watching television for women is larger than the mean amount of time spent watching television for men

Answer 1

given that the 99% confidence interval for the mean difference is (-5.73 , 4.13)

thos includes the null value zero , so e=we fail to reject the null hupothesis of non significance of difference & conclude that there is no differance in means of two groups

### Answer : third option is correct

the conficence interval include 0 which suggests that the population means might be equal. there does not appear to be a significant difference between the mean amount of time spent watching TV for women and men