# Question: The sample average age is 69 8 and the sample standard

The sample average age is 69.8 and the sample standard deviation is 9.2, based on a sample of 200 individuals in a retirement community. Your friend claims that “the sample average is approximately 9.2 away from the population mean.” Is your friend correct? Why or why not?

## Answer to relevant Questions

A random sample of 50 recent patient records at a clinic shows that the average billing per visit was $53.01 and the standard deviation was $16.48. a.* Find the standard error of the average and interpret it. b. You feel ...A poll involved interviews with 1,487 people and found that 42.3% of those interviewed were in favor of the candidate in question. The election will be held in three weeks. a. Approximately what percentage of the entire ...Do exercise 2 using the ages instead of the salaries. a.* List the employee numbers for your sample. b. Find the average salary for your sample and interpret this number. c. Find the standard deviation of salary for your ...a. What additional criterion must be satisfied for a one-sided confidence interval to be valid (in addition to the two assumptions needed for a two-sided confidence interval)? b. If in doubt, should you use a one-sided or a ...a. What is the relative frequency interpretation of the correctness of a confidence interval? b. What is the “lifetime track record” interpretation of the correctness of many confidence intervals?Post your question