Question

Watching TV: In 2012, the General Social Survey asked a sample of 1330 people how much time they spent watching TV each day. The mean number of hours was 3.05 with a standard deviation of 2.70. A sociologist claims that people watch a mean of 3 hours of TV per day. Do the data provide sufficient evidence to conclude that the mean hours of TV watched per day is more than the claim? Use the a=0.10 level of significance and the critical value method. Part 1 of 5 State the appropriate null and alternate hypotheses. H: > 3 This hypothesis test is a right-tailed test. Part: 1/5 Part: 1 / 5 - Part 2 of 5 Find the critical value(s). Round to three decimal places. If there is more than one critical value, separate them with commas. Critical value(s):

Answer 1

This is a right tail test so critical value will be positive.

At 0.1% z = 1.282 (rounded to three decimal places)

Hence 1.282 is the answer for this.

Test statistics:

x — и 3.05 – 3 27 — 1330 0.67535

I did test statistics also. may be next part is this in the question. Please round off as per the instructions. If 3 decimal then it will be 0.675.

Please comment if any doubt. thank you.