To find the radius r of a sphere of volume V, use the equation r = ∛(3V)/(4π). a. Graph the equation. b. A balloon used for advertising special events has a volume of 225 ft³. What is the radius of the balloon?

I'm being volume of cylinder with 13 in. radius and 30 in height answer choices in pic

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 number of nails of a given length is normally distributed with a mean length of 5.00 in, and a standard deviation of 0.03 in. find the number of nails in a bag of 120 that are less than 4.94 in. long.