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According to Chemical Engineering, an important property of fiber is its Wat percent absorbency of 12 randomly selected pieces of cotton fiber was found to be 23 with a standard deviation of 1.5. A random sample of 12 pieces of acetate yielded an average percent of 14 with a standard deviation f 1.25. Determine the t calculated. und your answer to 2 decimal places. d your answer

According to Chemical Engineering, an important property of fiber is its Wat percent absorbency of 12 randomly selected pieces of cotton fiber was found to be 23 with a standard deviation of 1.5. A random sample of 12 pieces of acetate yielded an average percent of 14 with a standard deviation f 1.25. Determine the t calculated. und your answer to 2 decimal places. d your answer

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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According to Chemical Engineering, an important property of fiber is its water absorbency. The average percent absorbency of 12 randomly selected pieces of cotton fiber was found to be 23 with a standard deviation of 1.5. A random sample of 12 pieces of acetate yielded an average percent of 14 with a standard deviation of 1.25. Determine the t calculated. Round your answer to 2 decimal places. Add your answer
Transcribed Image Text:According to Chemical Engineering, an important property of fiber is its water absorbency. The average percent absorbency of 12 randomly selected pieces of cotton fiber was found to be 23 with a standard deviation of 1.5. A random sample of 12 pieces of acetate yielded an average percent of 14 with a standard deviation of 1.25. Determine the t calculated. Round your answer to 2 decimal places. Add your answer
The average height of females in the freshman class of a certain college has historically been 162.5 centimeters with a standard deviation of 6.9 centimeters. A random sample of 69 females in the present freshman class has an average height of 165.8 centimeters. Determine the standardized Z. Round your answer to 2 decimal places. Add your answer
Transcribed Image Text:The average height of females in the freshman class of a certain college has historically been 162.5 centimeters with a standard deviation of 6.9 centimeters. A random sample of 69 females in the present freshman class has an average height of 165.8 centimeters. Determine the standardized Z. Round your answer to 2 decimal places. Add your answer
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