You want to prepare a 90% confidence interval for the life of a butterfly of a particular type. You took a random sample of 25 such butterflies. The mean life for this sample is 47 days with a standard deviation of 3 days. (I) Prepare a 90% confidence interval of the life of a butterfly. (7) (ii) Would 95% confidence interval be wider than a 90% confidence interval? Explain. (3)
You want to prepare a 90% confidence interval for the life of a butterfly of a particular type. You took a random sample of 25 such butterflies. The mean life for this sample is 47 days with a standard deviation of 3 days. (I) Prepare a 90% confidence interval of the life of a butterfly. (7) (ii) Would 95% confidence interval be wider than a 90% confidence interval? Explain. (3)
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 6CR
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You want to prepare a 90% confidence interval for the life of a butterfly of a particular type. You took a random sample of 25 such butterflies. The mean life for this sample is 47 days with a standard deviation of 3 days.
(I) Prepare a 90% confidence interval of the life of a butterfly. (7)
(ii) Would 95% confidence interval be wider than a 90% confidence interval? Explain. (3)
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