Cyclists were 3/5 finished with their ride when they reached the 15 kilometer mark how long was the ride

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

If you answer 2+2 you will get over 80 points

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.