IQ scores: Scores on an IQ test are normally distributed. A sample of 18 IQ scores had standard deviation s=6. (a) Construct a 99% confidence interval for the population standard deviation 6. Round the answers to at least two decimal places. (b) The developer of the test claims that the population standard deviation is o=8. Does this confidence interval contradict this claim? Explain. Part: 0 / 2 Part 1 of 2 A 99% confidence interval for the population standard deviation is

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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IQ scores: Scores on an IQ test are normally distributed. A sample of 18 IQ scores had standard deviation s=6.
(a) Construct a 99% confidence interval for the population standard deviation σ. Round the answers to at least two decimal places.
(b) The developer of the test claims that the population standard deviation is o=8. Does this confidence interval contradict this claim? Explain.
Part: 0 / 2
Part 1 of 2
A 99% confidence interval for the population standard deviation is <o<
Part: 1 / 2
Part 2 of 2
(Choose one)
×
because the value 8 (Choose one) contained in the confidence interval.
X
Ś
Español
olo
1
Transcribed Image Text:IQ scores: Scores on an IQ test are normally distributed. A sample of 18 IQ scores had standard deviation s=6. (a) Construct a 99% confidence interval for the population standard deviation σ. Round the answers to at least two decimal places. (b) The developer of the test claims that the population standard deviation is o=8. Does this confidence interval contradict this claim? Explain. Part: 0 / 2 Part 1 of 2 A 99% confidence interval for the population standard deviation is <o< Part: 1 / 2 Part 2 of 2 (Choose one) × because the value 8 (Choose one) contained in the confidence interval. X Ś Español olo 1
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