Giving a test to a group of students, the grades and gender are summarized below А B С Total
Male 15 14 10 39
Female 16 6 4 26
Total 31 20 14 65
Let p represent the population proportion of all male students who received a grade of B on this test. Use a
90% confidence interval to estimate p to four decimal places if possible.

What is a rational number between 9.5 and 9.7

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

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?