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Farren et al. (2004) compared the toughness of human fingernails along a transverse dimension (side to side) with the toughness along a longitudinal direction, with 14 measurements of each. The toughness of fingernails along a transverse direction averaged 3.3 kJ/m2, with a standard deviation of 0.65, while the mean toughness along the longitudinal direction was 6.2kJ/m², with a standard deviation of 1.41. Assume that the data are from two independent samples of 14 people What is the pooled sample variance (s)? (calculate your answer to three decimal places)

Farren et al. (2004) compared the toughness of human fingernails along a transverse dimension (side to side) with the toughness along a longitudinal direction, with 14 measurements of each. The toughness of fingernails along a transverse direction averaged 3.3 kJ/m2, with a standard deviation of 0.65, while the mean toughness along the longitudinal direction was 6.2kJ/m², with a standard deviation of 1.41. Assume that the data are from two independent samples of 14 people What is the pooled sample variance (s)? (calculate your answer to three decimal places)

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Farren et al. (2004) compared the toughness of human fingernails along a transverse dimension (side to side) with the toughness along a longitudinal direction, with 14 measurements of each. The toughness of fingernails along a transverse direction averaged 3.3 kJ/m2, with a standard deviation of 0.65, while the mean toughness along the longitudinal direction was 6.2kJ/m², with a standard deviation of 1.41. Assume that the data are from two independent samples of 14 people What is the pooled sample variance (s)? (calculate your answer to three decimal places)
Transcribed Image Text:Farren et al. (2004) compared the toughness of human fingernails along a transverse dimension (side to side) with the toughness along a longitudinal direction, with 14 measurements of each. The toughness of fingernails along a transverse direction averaged 3.3 kJ/m2, with a standard deviation of 0.65, while the mean toughness along the longitudinal direction was 6.2kJ/m², with a standard deviation of 1.41. Assume that the data are from two independent samples of 14 people What is the pooled sample variance (s)? (calculate your answer to three decimal places)
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