Construct a confidence interval for the population mean u. Assuming that the population has a normal distribution n = 12, x= 23.6, s = 6.6, 99% confidence.

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap

Find the amplitude of a sinusoidal function that models this temperature variation