Which number rounds to 3,500 when rounded to the nearest hundred

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

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

How do the number line graphs of the solutions sets of -23 > x and x-23 differ?