If we are testing for the equality of three population means, we should use the a. test statistic t. b. test statistic f. c. test statistic z. d. test statistic χ2

12 is 33 1/3% of 36 what is the whole

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary