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?
What is the minimal sample size needed for a 90% confidence interval to have a maximal...
What is the minimal sample size needed for a 95% confidence interval to have a maximal margin of error of 0.1 in the following scenarios? (Round your answers up the nearest whole number.) (a) a preliminary estimate for ρ is 0.14 (b) there is no preliminary estimate for p
What is the minimal sample size needed for a 95% confidence interval to have a maximal margin of error of 0.1 in the following scenarios? (For each answer, enter a number. Round your answers up the nearest whole number.) (a) a preliminary estimate for p is 0.38 (b) there is no preliminary estimate for p
What is the minimal sample size needed for a 95% confidence interval to have a maximal margin of error of 0.1 in the following scenarios? (For each answer, enter a number. Round your answers up the nearest whole number.) (a) a preliminary estimate for p is 0.27 (b) there is no preliminary estimate for p?
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 n needed to construct a 90% confidence interval to estimate the population proportion when p = 0.65 and the margin of error equals 7%. n= (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...
2. Basic Computation: Confidence Interval for p Consider n = 200 binomial trials with r = 80 successes. Check Requirements Is it appropriate to use a normal distribution to approximate the p̂ distribution? Find a 95% confidence interval for the population proportion of successes p. Interpretation Explain the meaning of the confidence interval you computed. 3. Basic Computation: Sample Size What is the minimal sample size needed for a 95% confidence interval to have a maximal margin of error of...
a sample size of _ is needed So there a 99% confidence interval will have a margin of error of three.so there a 99% confidence interval will have a margin of error of three. 1. simple random sample of 100 2. mean was 125 hours 3. standard deviation is 20 hours.
QUESTION # 1 A random sample of 5060 permanent dwellings on an entire reservation showed that 1571 were traditional hogans. (a) Let p be the proportion of all permanent dwellings on the entire reservation that are traditional hogans. Find a point estimate for p. (Round your answer to four decimal places.) (b) Find a 99% confidence interval for p. (Round your answer to three decimal places.) lower limit _________ upper limit _________ QUESTION # 2 What is the minimal sample...
Write a function in R that will provide the sample size needed (using the confidence interval method) to estimate the true population mean. You will have to pass several input variables to this function: confidence level, margin of error, and estimated standard deviation.