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3. The previous study, which had a sample size of only 12, was a pilot study for a larger follow-up study to investigating Cadmium levels in Boletus pinicola in which researchers plan estimate the mean Cadmium concentrations to within 0.1 ppm at the same confidence level. It is common to use the sample standard deviation of a pilot study in place of the population standard deviation for sample-size calculations. (Hint: "within 0.1 ppm" means that the maximum confidence interval width is (2)(0.1)=0.2 ppm. Now how does confidence level relate to margin of error?) (a) Fill in the following quantities: E = O = = Hint: E is NOT the margin of error in the previous problem. (b) Draw a fully labeled picture that illustrates how to find ze. Find the value of ze and show your calculator or spreadsheet syntax. ||

3. The previous study, which had a sample size of only 12, was a pilot study for a larger follow-up study to investigating Cadmium levels in Boletus pinicola in which researchers plan estimate the mean Cadmium concentrations to within 0.1 ppm at the same confidence level. It is common to use the sample standard deviation of a pilot study in place of the population standard deviation for sample-size calculations. (Hint: "within 0.1 ppm" means that the maximum confidence interval width is (2)(0.1)=0.2 ppm. Now how does confidence level relate to margin of error?) (a) Fill in the following quantities: E = O = = Hint: E is NOT the margin of error in the previous problem. (b) Draw a fully labeled picture that illustrates how to find ze. Find the value of ze and show your calculator or spreadsheet syntax. ||

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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confidence level= 0.95

sd= 0.3521

3. The previous study, which had a sample size of only 12, was a pilot study for a larger follow-up study to investigating Cadmium levels in Boletus pinicola in which researchers plan estimate the mean Cadmium concentrations to within 0.1 ppm at the same confidence level. It is common to use the sample standard deviation of a pilot study in place of the population standard deviation for sample-size calculations. (Hint: "within 0.1 ppm" means that the maximum confidence interval width is (2)(0.1)=0.2 ppm. Now how does confidence level relate to margin of error?) (a) Fill in the following quantities: E = O = = Hint: E is NOT the margin of error in the previous problem. (b) Draw a fully labeled picture that illustrates how to find ze. Find the value of ze and show your calculator or spreadsheet syntax. (c) Find the minimum sample side needed to attain the desired margin of error. Show your work.
Transcribed Image Text:3. The previous study, which had a sample size of only 12, was a pilot study for a larger follow-up study to investigating Cadmium levels in Boletus pinicola in which researchers plan estimate the mean Cadmium concentrations to within 0.1 ppm at the same confidence level. It is common to use the sample standard deviation of a pilot study in place of the population standard deviation for sample-size calculations. (Hint: "within 0.1 ppm" means that the maximum confidence interval width is (2)(0.1)=0.2 ppm. Now how does confidence level relate to margin of error?) (a) Fill in the following quantities: E = O = = Hint: E is NOT the margin of error in the previous problem. (b) Draw a fully labeled picture that illustrates how to find ze. Find the value of ze and show your calculator or spreadsheet syntax. (c) Find the minimum sample side needed to attain the desired margin of error. Show your work.
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