Please help me with math

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

How many square feet of out door carpet will we need for this hole? 8ft 3ft 12ft 4ft

The vertices of a triangle are a(7.5), b(4,2), and c19. 2). what is