There are 32 females cast in the school play. The ratio of male roles is 3:8. How many males are cast in the school play

Can someone me with the property questions for 12 13 and 14 plz

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

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.