An educational psychologist wants to test whether a new teaching method positively affects reading comprehension scores using a significance level of 0.01. The mean reading comprehension scores of students using the old method has a value of 34 . Assume scores in the population are distributed normally. State the Null and Alternative Hypotheses.

43lbs of tomatos cost $387. how much would 41lbs cost

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?

Aboard 60 in. long is cut two parts so that the longer piece is 5 times the shorter. what are the length of the two pieces?