In a study where scientists wanted to compare two different techniques for measuring the amount of k ingested by 16 infants, the mean and standard deviation of the measured differences were d = 135

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
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21. In a study where scientists wanted to compare two different techniques for measuring the amount of
milk ingested by 16 infants, the mean and standard deviation of the measured differences were d = 135
and
SD = 200 respectively. A probability plot of the differences showed that differences are distributed
according to a normal distribution. At a = 0.01 significance level, does it appear that the true average
difference between the intake values measured by the two methods is greater than zero?
(You can use the following value from a t-table as needed: P(tı5 > 2.7) = 0.008.)
Transcribed Image Text:21. In a study where scientists wanted to compare two different techniques for measuring the amount of milk ingested by 16 infants, the mean and standard deviation of the measured differences were d = 135 and SD = 200 respectively. A probability plot of the differences showed that differences are distributed according to a normal distribution. At a = 0.01 significance level, does it appear that the true average difference between the intake values measured by the two methods is greater than zero? (You can use the following value from a t-table as needed: P(tı5 > 2.7) = 0.008.)
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