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5. We would like to find the sample size needed to give with 92% confidence, a...
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=
4. Sample Size What is the minimal sample size needed for a 99% confidence interval to have a maximal margin of error of 0.06: if a preliminary estimate for p is 0.8? if there is no preliminary estimate for p? 5. Myers-Briggs: Actors Isabel Briggs Myers was a pioneer in the study of personality types. The following information is taken from MBTI Manual: A Guide to the Development and Use of the Myers-Briggs Type Indicator by Myers and McCaulley (Consulting...
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...
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 =...
Find the required sample size needed to make a 99% confidence interval for the population proportion if the margin of error can be no more than 5%. Assume you may use Assume you have no information about .
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 99% confidence interval to estimate the average GPA for the student population at a college with a margin of error equal to 0.7. Assume the standard deviation of the GPA for the student population is 1.0 The sample size needed is _____
What is the minimal sample size needed for a 90% confidence interval to have a maximal margin of error of 0.05 if there is no preliminary estimate for p?
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.)
Find the sample size needed to estimate the percentage of democrats among registered voters in Florida. Use a 0.01 margin of error, and use a confidence level of 96% and assume p=0.55