A coffee shop claims that its fresh-brewed drinks have a mean caffeine content of 140 mg per 8 ounces. You want to test this claim. You find that a random sample of 42 eight ounce servings has a mean caffeine content of 146 mg and a
standard deviation of 22 mg. At a = 0.05, test this claim.

For the function, f(x) = -5x 2, find f(-4).

Alake near the arctic circle is covered by a 222-meter-thick sheet of ice during the cold winter months. when spring arrives, the warm air gradually melts the ice, causing its thickness to decrease at a constant rate. after 333 weeks, the sheet is only 1.251.251, point, 25 meters thick. let s(t)s(t)s, left parenthesis, t, right parenthesis denote the ice sheet's thickness sss (measured in meters) as a function of time ttt (measured in weeks).

You work for a lender that requires a 20% down payment and uses the standard depth to income ratio to determine a person‘s a little eligibility for a home loan of the following choose the person that you would rate the highest on their eligibility for a home loan