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In a study to test whether or not there is a difference between the average heights of adult females in two different countries, random samples of size 21 = 120 and n2 = 150 yielded I= 62. 7 inches and = 61. 8 inches. Extensive studies of a similar kind have shown that it is reasonable to let o1 = 2. 5 inches and o1 = 2. 62 inches. Test at the 0.05 level of significance whether the difference between these two sample means is significant. Instructions: Assume 8 - 0, in addressing the problem obtain the value of the test statistic and its corresponding p- value up to four decimal places. Oz = 2. 8772; p– value = 0.0040 Oz = 2. 8772; p - value = 0.0020 Oz= -2. 8772; p- value = 0.9979 Oz = 2. 8772; p – value = 0.9980

In a study to test whether or not there is a difference between the average heights of adult females in two different countries, random samples of size 21 = 120 and n2 = 150 yielded I= 62. 7 inches and = 61. 8 inches. Extensive studies of a similar kind have shown that it is reasonable to let o1 = 2. 5 inches and o1 = 2. 62 inches. Test at the 0.05 level of significance whether the difference between these two sample means is significant. Instructions: Assume 8 - 0, in addressing the problem obtain the value of the test statistic and its corresponding p- value up to four decimal places. Oz = 2. 8772; p– value = 0.0040 Oz = 2. 8772; p - value = 0.0020 Oz= -2. 8772; p- value = 0.9979 Oz = 2. 8772; p – value = 0.9980

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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In a study to test whether or not there is a ditference between the average heights of adult females in two different countries, random samples of size 1 = 120 and n2 = 150 yielded I = 62.7 inches and I = 61. 8 inches. Extensive studies of a similar kind have shown that it is reasonable to let o1 = 2.5 inches and o1 = 2. 62 inches. Test at the 0.05 level of significance whether the difference between these two sample means is significant. Instructions: Assume 8 -0. in addressing the problem obtain the value of the test statistic and its corresponding p - value up to four decimal places. Oz = 2. 8772; p – value = 0.0040 Oz = 2. 8772; p- value = 0. 0020 Oz= -2.8772; p- value = 0.9979 Oz = 2. 8772;p- value = 0.9980
Transcribed Image Text:In a study to test whether or not there is a ditference between the average heights of adult females in two different countries, random samples of size 1 = 120 and n2 = 150 yielded I = 62.7 inches and I = 61. 8 inches. Extensive studies of a similar kind have shown that it is reasonable to let o1 = 2.5 inches and o1 = 2. 62 inches. Test at the 0.05 level of significance whether the difference between these two sample means is significant. Instructions: Assume 8 -0. in addressing the problem obtain the value of the test statistic and its corresponding p - value up to four decimal places. Oz = 2. 8772; p – value = 0.0040 Oz = 2. 8772; p- value = 0. 0020 Oz= -2.8772; p- value = 0.9979 Oz = 2. 8772;p- value = 0.9980
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