In the context of a hypothesis test for two proportions, which of the following statements about the pooled sample proportion, p, is/are true? i. it estimates the common value of p 1 p1 and p 2 p2 under the assumption of equal proportions. ii. it is obtained by averaging the two sample proportions modifyingabove p with caret 1 p1 and modifyingabove p with caret 2 p2. iii. it is equal to the proportion of successes in both samples combined.

Item 1 which question could the expression 1000n answer? let n = the number of gallons of gas used. how many miles per gallon did the car get driving 1000 miles? let n = the number of grams of food needed for each dog. how many grams of food are needed to feed 1000 dogs? let n = the number of people at the show. how many empty seats were there at the show if there are 1000 seats at the theater? let n = the number of seats at the theater. how many empty seats will there by if 1000 people come to the show?