During a basketball game, the home team scored 32 points from normal shots, 18 points from three-point shots, and 16 points from free throws. Which of the
following expresses the ratio of the points earned from normal shots to the total
points earned in all three ways?
A) 16:33; 16 to 33; 16/33
B) 9:33; 9 to 33; 9/33
C) 33:16; 33 to 16; 33/16
OD 8:33; 8 to 33; 8/33

Arandom sample of 15 observations is used to estimate the population mean. the sample mean and the standard deviation are calculated as 172 and 63, respectively. assume that the population is normally distributed. a. with 99 confidence, what is the margin of error for the estimation of the population mean? b. construct the 99% confidence interval for the population mean. c. construct the 95% confidence interval for the population mean. d. construct the 83% confidence interval for the population mean. hint: you need to use excel function =t.inv.2t to find the value of t for the interval calculation.