Can some one me to teach this to my daughter

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

Franco wants to double the volume of the cone. what should he do?

Adozen bananas weigh 3 pounds how many ounces does 1 banana weigh