Data on the blood cholesterol levels of 6 rats give mean = 85, s= 12. a 95% confidence interval for the mean blood cholesterol of rats under this condition is
a)72.4 to 97.6
b)73.0 to 97.0
c)75.4 to 94.6
d)72.4 to 94.6

The sales totals at macy's food store have increased exponentially over the months. which of these best shows the sales in the first three months?

Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?