The operations manager at the corporate headquarters of a large wood products company wanted the average time that employees spend at their computers each week The manager randomly sampled employees and obtained a 99% confidence interval of (17 hours/week, 25 hours/week).

Which of following would be true if the level of confidence was lowered to 95%?

Choose the correct answer below

a. The width of the confidence interval would remain the same.

b. The width of the confidence interval would be smaller.

c. The width of the confidence interval would be larger.

d. More information is needed to determine what would happen to the width of the confidence interval.

To which sets of numbers does -12 belong? choose all answers that are correct. a) natural numbers b) integers c) real numbers d) irrational numbers

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?

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.