Consider a population having a standard deviation equal to 9.96. We wish to estimate the mean of this population. (a) How large a random sample is needed to construct a 95 percent confidence interval for the mean of this population with a margin of error equal to 1? (Round your answer to the next whole number.) The random sample is units. (b) Suppose that we now take a random sample of the size we have determined in part a. If we obtain a sample mean equal to 294, calculate the 95 percent confidence interval for the population mean. What is the interval's margin of error? (Round your answers to the nearest whole number.) The 95 percent confidence interval is Margin of error
Consider a population having a standard deviation equal to 9.96. We wish to estimate the mean of this population. (a) How large a random sample is needed to construct a 95 percent confidence interval for the mean of this population with a margin of error equal to 1? (Round your answer to the next whole number.) The random sample is units. (b) Suppose that we now take a random sample of the size we have determined in part a. If we obtain a sample mean equal to 294, calculate the 95 percent confidence interval for the population mean. What is the interval's margin of error? (Round your answers to the nearest whole number.) The 95 percent confidence interval is Margin of error
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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![Consider a population having a standard deviation equal to 9.96. We wish to estimate the mean of this population.
(a) How large a random sample is needed to construct a 95 percent confidence interval for the mean of this population with a margin
of error equal to 1? (Round your answer to the next whole number.)
The random sample is
units.
(b) Suppose that we now take a random sample of the size we have determined in part a. If we obtain a sample mean equal to 294,
calculate the 95 percent confidence interval for the population mean. What is the interval's margin of error? (Round your answers to
the nearest whole number.)
The 95 percent confidence interval is
Margin of error](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8e0cc74a-3d41-48a3-b725-0bb8c72fee56%2F065165cf-0441-4c3d-a96c-98e6e9240c35%2Fu0wdgud_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Consider a population having a standard deviation equal to 9.96. We wish to estimate the mean of this population.
(a) How large a random sample is needed to construct a 95 percent confidence interval for the mean of this population with a margin
of error equal to 1? (Round your answer to the next whole number.)
The random sample is
units.
(b) Suppose that we now take a random sample of the size we have determined in part a. If we obtain a sample mean equal to 294,
calculate the 95 percent confidence interval for the population mean. What is the interval's margin of error? (Round your answers to
the nearest whole number.)
The 95 percent confidence interval is
Margin of error
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