In this exercise, we examine the effect of the confidence level on determining the sample size...
In this exercise, we examine the effect of the confidence level
on determining the sample size needed.
Find the sample size needed to give a margin of error within plus
or minus 4 with 99% confidence. With 95% confidence. With 90%
confidence. Assume that we use σ=35 as our estimate of the standard
deviation in each case.
Round your answers up to the nearest integer.
99% n=
95%n=
90% n=
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In this exercise, we examine the effect of the confidence level
on determining the sample size...
Chapter 6, Section 2-CI, Exercise 110 What Influences the Sample Size Needed? In this exercise, we...
Chapter 6, Section 2-CI, Exercise 110 What Influences the Sample Size Needed? In this exercise, we examine the effect of the confidence level on determining the sample size needed. Find the sample size needed to give a margin of error within +4 with 99% confidence. With 95% confidence. With 90% confidence. Assume that we use õ= 25 as our estimate of the standard deviation in each case. Round your answers up to the nearest integer. 99% :n 95%: n =...
Chapter 6, Section 2-CI, Exercise 111 What Influences the Sample Size Needed? In this exercise, we...
Chapter 6, Section 2-CI, Exercise 111 What Influences the Sample Size Needed? In this exercise, we examine the effect of the value of the estimated standard deviation on determining the sample size needed Find the sample size needed to give, with % confidence, a margin o error within 5 if the estimated standard de ation sơ-: fthe estimate standard deviation so-s the esti mate standard deviation is Ơ 10. Round your answers up to the nearest integer. 8-40:n o 20
Determine the sample size needed to construct a 95% confidence interval to estimate the average GPA...
Determine the sample size needed to construct a 95% confidence interval to estimate the average GPA for the student population at a college with a margin of error equal to 0.2. Assume the standard deviation of the GPA for the student population is 25 The sample size needed is (Round up to the nearest integer.) Determine the sample size n needed to construct a 90% confidence interval to estimate the population proportion for the following sample proportions when the margin...
Determine the sample size n needed to construct a 99% confidence interval to estimate the population...
Determine the sample size n needed to construct a 99% confidence interval to estimate the population mean when σ=87 and the margin of error equals 12. n =___(Round up to the nearest integer.)
Determine the sample size n needed to construct a 99% confidence interval to estimate the population...
Determine the sample size n needed to construct a 99% confidence interval to estimate the population mean when σ=33 and the margin of error equal 5 n=?
Determine the sample size needed to construct a 99% confidence interval to estimate the average GPA...
Determine the sample size needed to construct a 99% confidence interval to estimate the average GPA for the student population at a college with a margin of error equal to 0.4. Assume the standard deviation of the GPA for the student population is 3.0. The sample size needed is (Round up to the nearest integer.)
For the provided sample mean, sample size, and population standard deviation, complete parts (a) through (c)...
For the provided sample mean, sample size, and population standard deviation, complete parts (a) through (c) below. Assume that x is normally distributed x= 27, n=9, 0 = 6 a. Find a 95% confidence interval for the population mean The 95% confidence interval is from to (Round to two decimal places as needed.) b. Identify and interpret the margin of error. The margin of error is (Round to two decimal places as needed.) Interpret the margin of error. Choose the...
For the provided sample mean, sample size, and population standard deviation, complete parts (a) through (c)...
For the provided sample mean, sample size, and population standard deviation, complete parts (a) through (c) below. x= 23, n= 36, 3 = 3 a. Find a 95% confidence interval for the population mean. The 95% confidence interval is from to (Round to two decimal places as needed.) b. Identify and interpret the margin of error. The margin of error is (Round to two decimal places as needed.) Interpret the margin of error. Choose the correct answer below. O A....
Using the Formula n=1/(ME)2 to Determine Sample Size When we want 95 % confidence and use...
Using the Formula n=1/(ME)2 to Determine Sample Size When we want 95 % confidence and use the conservative estimate of p = 0.5 , we can use the simple formula n = 1 M E 2 to roughly determine the sample size needed for a given margin of error M E . Use this formula to determine the sample size needed for a margin of error of 0.04 . Enter the exact answer.
Determine the sample size n needed to construct a 99% confidence interval to estimate the population...
Determine the sample size n needed to construct a 99% confidence interval to estimate the population mean for the following margins of error when σ=77. a) 5 b) 8 c) 10 a)n= (Round up to the nearest integer.) b)n= (Round up to the nearest integer.) c)n= (Round up to the nearest integer.)
Chapter 6, Section 2-CI, Exercise 110 What Influences the Sample Size Needed? In this exercise, we examine the effect of the confidence level on determining the sample size needed. Find the sample size needed to give a margin of error within +4 with 99% confidence. With 95% confidence. With 90% confidence. Assume that we use õ= 25 as our estimate of the standard deviation in each case. Round your answers up to the nearest integer. 99% :n 95%: n =...
Chapter 6, Section 2-CI, Exercise 111 What Influences the Sample Size Needed? In this exercise, we examine the effect of the value of the estimated standard deviation on determining the sample size needed Find the sample size needed to give, with % confidence, a margin o error within 5 if the estimated standard de ation sơ-: fthe estimate standard deviation so-s the esti mate standard deviation is Ơ 10. Round your answers up to the nearest integer. 8-40:n o 20
Determine the sample size needed to construct a 95% confidence interval to estimate the average GPA for the student population at a college with a margin of error equal to 0.2. Assume the standard deviation of the GPA for the student population is 25 The sample size needed is (Round up to the nearest integer.) Determine the sample size n needed to construct a 90% confidence interval to estimate the population proportion for the following sample proportions when the margin...
Determine the sample size needed to construct a 99% confidence interval to estimate the average GPA for the student population at a college with a margin of error equal to 0.4. Assume the standard deviation of the GPA for the student population is 3.0. The sample size needed is (Round up to the nearest integer.)
For the provided sample mean, sample size, and population standard deviation, complete parts (a) through (c) below. Assume that x is normally distributed x= 27, n=9, 0 = 6 a. Find a 95% confidence interval for the population mean The 95% confidence interval is from to (Round to two decimal places as needed.) b. Identify and interpret the margin of error. The margin of error is (Round to two decimal places as needed.) Interpret the margin of error. Choose the...
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