Suppose that a randomized comparative experiment studies the effect of diet on blood pressure. Researchers divide 54 healthy white males at random into two groups. One group receives a calcium supplement, and the other group receives a placebo. At the beginning of the study, the researchers measure several variables on the subjects. The average seated systolic blood pressure of the 27 members of the placebo group is reported to be x̄=114.9, with a standard deviation of ?=9.3. Give a 95% confidence interval for the mean systolic blood pressure of the population from which the subjects were recruited. Report your interval values to one decimal place.
Suppose that a randomized comparative experiment studies the effect of diet on blood pressure. Researchers divide 54 healthy white males at random into two groups. One group receives a calcium supplement, and the other group receives a placebo. At the beginning of the study, the researchers measure several variables on the subjects. The average seated systolic blood pressure of the 27 members of the placebo group is reported to be x̄=114.9, with a standard deviation of ?=9.3. Give a 95% confidence interval for the mean systolic blood pressure of the population from which the subjects were recruited. Report your interval values to one decimal place.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Suppose that a randomized comparative experiment studies the effect of diet on blood pressure. Researchers divide 54 healthy white males at random into two groups. One group receives a calcium supplement, and the other group receives a placebo. At the beginning of the study, the researchers measure several variables on the subjects. The average seated systolic blood pressure of the 27 members of the placebo group is reported to be x̄=114.9, with a standard deviation of ?=9.3.
Give a 95% confidence interval for the mean systolic blood pressure of the population from which the subjects were recruited.
Report your interval values to one decimal place.
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