Find the average of numbers 87, 84, 86, 90, 82, 88, 78.
84
87
85
86

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

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25