Question

In a study of the effect of diet on cholesterol, rats were fed several different diets. One diet had 5% added fiber from oat bran. The study report gives results in the form "mean plus or minus the standard error of the mean." This form is very common in scientific publications. For the 8 rats fed this diet, blood cholesterol levels (in milligrams per deciliter of blood) were 89.7 ± 5.28. What are x and s for these 8 rats? (Use 2 decimal places.) x = 89.7 Correct: Your answer is correct. seenKey 89.7 mg/dl s = 14.93 Correct: Your answer is correct. seenKey 14.93 mg/dl

Answer 1

Mean = 89.7

std dev=5.28

Explanation:

Given that in a study of the effect of diet on cholesterol, rats were fed several different diets. One diet had 5% added fiber from oat bran. The study report gives results in the form "mean plus or minus the standard error of the mean." This form is very common in scientific publications.

Because the interval is formed 1 std deviation on either side of the mean we get

`Mean = 89.7\\std dev=5.28`