Arandom sample of 50 mathematics grades out of a total of 200 showed a mean of 75 and a standard deviation of 10. (a) what are the 95% confidence limits for the mean of the 200 grades? (b) with what degree of confidence could we say that the mean of all 200 grades is 75 ± 1?

Martin likes to make flower bouquets that have 3 daffodils and 4 tulips per vase. a daffodil has a mass of d grams, a tulip has a mass of t grams, and the vase has a mass of u grams. the expression 5(3d + 4t + v) describes the mass of 5 bouquets. match each amount in the situation with the expression that represents it. situation expression number of bouquets mass of one bouquet mass of the tulips in one bouquet 4t mass of the daffodils in one bouquet 3d + 4t + v

If jaime wants to find 60% of 320, which table should he use?

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !