Consider an excavator that is known to scoop soil with weights following a normal distribution with (unknown) mean and standard deviation = 3kg. We measure the weight of soil in a sample of scoops and obtain the following data (in kg):352, 351, 361, 353, 352, 358, 360, 358, 359Construct a precise 95% and 98% confidence interval for the mean. Note: round your answers to only two decimals.Suppose now that standard deviation is not known. Construct a precise 95% and 98% confidence interval for the mean The 95% confidence interval is The 98% confidence interval is
Consider an excavator that is known to scoop soil with weights following a normal distribution with (unknown) mean and standard deviation = 3kg. We measure the weight of soil in a sample of scoops and obtain the following data (in kg):352, 351, 361, 353, 352, 358, 360, 358, 359Construct a precise 95% and 98% confidence interval for the mean. Note: round your answers to only two decimals.Suppose now that standard deviation is not known. Construct a precise 95% and 98% confidence interval for the mean The 95% confidence interval is The 98% confidence interval is
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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![Consider an excavator that is known to scoop soil with weights following a normal distribution with (unknown) mean and standard deviation = 3kg. We measure the
weight of soil in a sample of scoops and obtain the following data (in kg):352, 351, 361, 353, 352, 358, 360, 358, 359Construct a precise 95% and 98% confidence interval
for the mean. Note: round your answers to only two decimals.Suppose now that standard deviation is not known. Construct a precise 95% and 98% confidence interval for
the mean The 95% confidence interval is The 98% confidence interval is](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa22027b1-fe1e-413d-b226-ed349d1612a8%2Fcb7e057d-01f6-4dd5-96e7-204d0598285c%2F2qjnsvot_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Consider an excavator that is known to scoop soil with weights following a normal distribution with (unknown) mean and standard deviation = 3kg. We measure the
weight of soil in a sample of scoops and obtain the following data (in kg):352, 351, 361, 353, 352, 358, 360, 358, 359Construct a precise 95% and 98% confidence interval
for the mean. Note: round your answers to only two decimals.Suppose now that standard deviation is not known. Construct a precise 95% and 98% confidence interval for
the mean The 95% confidence interval is The 98% confidence interval is
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