A scale factor between 0 and 1 represents a

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

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Enter the number of complex zeros for the polynomial function in the box. f(x) = x+ + 5x² +6