Golf Averages A study of 35 golfers showed that their average score on a particular course was 92. The standard deviation of the population is 5. a. Find the best point estimate of the mean. b. C. d. Find the 95% confidence interval of the mean score for all golfers. Find the 95% confidence interval of the mean score if a sample of 60 golfers is used instead of a sample of 35. Which interval is smaller? Explain why. Reading Scores A sample of the reading scores of 35 fifth-graders has a mean of 82. The standard deviation of the population is 15. a. b. C. d. Find the best point estimate of the mean. Find the 95% confidence interval of the mean reading scores of all fifth-graders. Find the 99% confidence interval of the mean reading scores of all fifth-graders. Which interval is larger? Explain why. Actuary Exams A survey of 35 individuals who passed the seven exams and obtained the rank of Fellow in the actuarial field finds the average salary to be $150,000. If the standard deviation for the population is $15,000, construct a 95% confidence interval for all Fellows.