Timed plz help me

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

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9