Question: Consider a large population with 90 and
Consider a large population with µ = 90 and σ = 18. Assuming n/N < .05, find the mean and standard deviation of the sample mean, , for a sample size of
Answer to relevant QuestionsA population of N = 5000 has σ = 25. In each of the following cases, which formula will you use to calculate σ and why? Using the appropriate formula, calculate σ for each of these cases. a. n = 300 b. n = 100 Explain briefly the meaning of sampling error. Give an example. Does such an error occur only in a sample survey, or can it occur in both a sample survey and a census? The delivery times for all food orders at a fast-food restaurant during the lunch hour are normally distributed with a mean of 7.7 minutes and a standard deviation of 2.1 minutes. Let be the mean delivery time for a random ...Consider the following population of six numbers. a. Find the population mean. b. Liza selected one sample of four numbers from this population. The sample included the numbers 13, 8, 9, and 12. Calculate the sample mean and ...According to Moebs Services Inc., an individual checking account at U.S. community banks costs these banks between $175 and $200 per year (Time, November 21, 2011). Suppose that the average annual cost of all such checking ...
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