What sample size is needed to give a margin of error within +-1.5 in estimating a...
What sample size is needed to give a margin of error within +-1.5 in estimating a population mean with 99% confidence, assuming a previous sample had s=3.4
Round your answer up to the nearest integer.
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What sample size is needed to give a margin of error within
+-1.5 in estimating a...
What sample size is needed to give a margin of error within plus-or-minus 2.5% in estimating...
What sample size is needed to give a margin of error within plus-or-minus 2.5% in estimating a population proportion with 90% confidence? An initial small sample has p ^ =equals 0.81. Round your answer up to the nearest integer. The absolute tolerance is +/-2
What sample size is needed to give a margin of error within + or - 6%...
What sample size is needed to give a margin of error within + or - 6% in estimating a population proportion with 90% confidence? Use z-values rounded to three decimal places. Round your answer up to the nearest integer. Please show equation and work.
A) If you want to be 95% confident of estimating the population mean to within a...
A) If you want to be 95% confident of estimating the population mean to within a sampling error of plus or minus 2 and the standard deviation is assumed to be 16, what sample size is required? The sample size required is _____ (Round up to the nearest integer.) B) If you want to be 95% confident of estimating the population proportion to within a sampling error of plus or minus 0.06, what sample size is needed? A sample size...
If you want to be 99% confident of estimating the population proportion to within a sampling...
If you want to be 99% confident of estimating the population proportion to within a sampling error of ±0.05 and there is historical evidence that the population proportion is approximately 0.36, what sample size needed? A sample size of is needed. Round up to the nearest integer.)
Find the margin of error for a 95% confidence interval for estimating the population mean when...
Find the margin of error for a 95% confidence interval for estimating the population mean when the sample standard deviation equals 92, with a sample size of (a) 400,(b) 1800. What is the effect of the sample size? 2. The margin of error for a 95% confidence interval with a sample size of 400 is (Round to the nearest tenth as needed.) b. The margin of error for a 90% confidence interval with a sample size of 1600 is (Round...
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 =...
If you want to be 99% confident of estimating the population mean to within a sampling...
If you want to be 99% confident of estimating the population mean to within a sampling error of 16 and the standard deviation is assumed to be 17. what sample size is required? The sample size required is - (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=87 and the margin of error equals 12. n =___(Round up to the nearest integer.)
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 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.)
If you want to be 99% confident of estimating the population proportion to within a sampling error of ±0.05 and there is historical evidence that the population proportion is approximately 0.36, what sample size needed? A sample size of is needed. Round up to the nearest integer.)
Find the margin of error for a 95% confidence interval for estimating the population mean when the sample standard deviation equals 92, with a sample size of (a) 400,(b) 1800. What is the effect of the sample size? 2. The margin of error for a 95% confidence interval with a sample size of 400 is (Round to the nearest tenth as needed.) b. The margin of error for a 90% confidence interval with a sample size of 1600 is (Round...
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 =...
If you want to be 99% confident of estimating the population mean to within a sampling error of 16 and the standard deviation is assumed to be 17. what sample size is required? The sample size required is - (Round up to the nearest integer.)
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.)
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