A group of undergraduate students at Cal Poly (Mintz, Mintz, Moore, and Schuh, 2002) conducted a study examining how much weight students carry in their backpacks. They weighed the backpacks of 100 students and compared the distributions of backpack weights between men and women. The student researchers also recorded the body weight of each student and computed the ratio of backpack weight to body weight for each student. a. Perform the hypothesis test. State the value of your test statistic, rounded to 2 decimal places. t = ____ c. Find the 99% confidence interval, rounded to 3 decimal places (______________, _____________)
A group of undergraduate students at Cal Poly (Mintz, Mintz, Moore, and Schuh, 2002) conducted a study examining how much weight students carry in their backpacks. They weighed the backpacks of 100 students and compared the distributions of backpack weights between men and women. The student researchers also recorded the body weight of each student and computed the ratio of backpack weight to body weight for each student. a. Perform the hypothesis test. State the value of your test statistic, rounded to 2 decimal places. t = ____ c. Find the 99% confidence interval, rounded to 3 decimal places (______________, _____________)
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter6: Ratio, Proportion, And Probability
Section: Chapter Questions
Problem 8CR
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Backpack Weights
A group of undergraduate students at Cal Poly (Mintz, Mintz, Moore, and Schuh, 2002) conducted a study examining how much weight students carry in their backpacks. They weighed the backpacks of 100 students and compared the distributions of backpack weights between men and women. The student researchers also recorded the body weight of each student and computed the ratio of backpack weight to body weight for each student.
a. Perform the hypothesis test. State the value of your test statistic, rounded to 2 decimal places.
t = ____
c. Find the 99% confidence interval, rounded to 3 decimal places
(______________, _____________)
Transcribed Image Text:b. Conduct a test of whether or not the sample data provide evidence that the population mean ratio differs from 0.10. The sample
mean is x = 0.077125 and the standard deviation is 0. 036637.
State your hypotheses:
Transcribed Image Text:Ho : μ = 0. 10
Ha : μ = 0. 10
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