Question: Explain the various alternatives for decreasing the width of a
Explain the various alternatives for decreasing the width of a confidence interval. Which is the best alternative?
Answer to relevant QuestionsFind 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 ...a. Find the value of t from the t distribution table for a sample size of 22 and a confidence level of 95%. b. Find the value of t from the t distribution table for 60 degrees of freedom and a 90% confidence level. c. Find ...a. A sample of 400 observations taken from a population produced a sample mean equal to 92.45 and a standard deviation equal to 12.20. Make a 98% confidence interval for µ b. Another sample of 400 observations taken from ...The mean time taken to design a house plan by 40 architects was found to be 23 hours with a standard deviation of 3.75 hours. a. Construct a 98% confidence interval for the population mean . b. Suppose the confidence ...You are working for a bank. The bank manager wants to know the mean waiting time for all customers who visit this bank. She has asked you to estimate this mean by taking a sample. Briefly explain how you will conduct this ...
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