# Question: For a population data set 14 50 a What should

For a population data set, σ = 14.50.

a. What should the sample size be for a 98% confidence interval for µ to have a margin of error of estimate equal to 5.50?

b. What should the sample size be for a 95% confidence interval for µ to have a margin of error of estimate equal to 4.25?

a. What should the sample size be for a 98% confidence interval for µ to have a margin of error of estimate equal to 5.50?

b. What should the sample size be for a 95% confidence interval for µ to have a margin of error of estimate equal to 4.25?

## Relevant Questions

Determine the sample size for the estimate of µ for the following. a. E = 2.3, σ = 15.40, confidence level = 99% b. E = 4.1, σ = 23.45, confidence level = 95% c. E = 25.9, σ = 122.25, confidence level = 90% Lazurus Steel Corporation produces iron rods that are supposed to be 36 inches long. The machine that makes these rods does not produce each rod exactly 36 inches long. The lengths of the rods vary slightly. It is known that ...Refer to Exercise 8.24. A city planner wants to estimate, with a 97% confidence level, the average monthly residential water usage in the city. Based on earlier data, the population standard deviation of the monthly ...Find the value of t for the t distribution for each of the following. a. Area in the right tail = .05 and df = 12 b. Area in the left tail = .025 and n = 66 c. Area in the left tail = .001 and df = 49 d. Area in the right ...Suppose, for a sample selected from a population, = 25.5 and s = 4.9. a. Construct a 95% confidence interval for µ assuming n = 47. b. Construct a 99% confidence interval for µ assuming n = 47. Is the width of the 99% ...Post your question