Calculate the 95% confidence interval for the true population mean based on a sample with =225, =8.5, and =45.

Jack is considering a list of features and fees for denver bank. jack plans on using network atms about 4 times per month. what would be jack’s total estimated annual fees for a checking account with direct paycheck deposit, one overdraft per year, and no 2nd copies of statements?

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?