Based on the QQplot of the data and that the sample size is 44, how reliable are

Question

Based on the QQplot of the data and that the sample size is 44, how reliable are the p-values and CI calculated in Q4-6? wt 0.5-Wt 1 0 Normal Quantile If you are unsure and you want to to check your answer you can upload the data into Statcrunch and take the differences of the 0.5 week-1 week using Data Compute Data Expression (now compute the expression by clicking out the expression). Then go to Applets -> Sampling Distribution -> From Data Table (select the difference column that you have just created) -> In Sample size choose 44 (and look the the lower plot). There are several horizontal lines in the QQplot, this is because the calf weights have been rounded (up or down) making the differenced data discrete. However, there are several different lines (many numbers) and the sample size is relatively large. So we can be reassured that the central limit has kicked in and the difference in sample means will be close to normal. This means the CI and p-values are reliable. The data is normal so the results are highly unreliable. The QQplot shows that the differences are normal, therefore CI and p-values are reliable.

Explanation / Answer

Correct Answer: Option (A) There are sevel oritontal line in the QQ plot, this is beacasue falf weight have be rouned making the difference data discrete. Hoween, there are sevenral different line and sample size is relatively large.

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