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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

Section10.3: Measures Of Spread

Problem 1GP

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Complete it for n is 40 too pls. 3-3

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A simple random sample of size n is drawn from a population that is known to be normally distributed. The sample variance, s, is determined to be 128 Completo
parts (a) through (c).
(a) Construct a 90% confidence interval for o² if the sample size, n, is 20.
The lower bound is
8.07. (Round to two decimal places as needed.)
The upper bound is
24.04. (Round to two decimal places as needed.)
(b) Construct a 90% confidence interval for o² if the sample size, n, is 30.
The lower bound is (Round to two decimal places as needed.)
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