Millions of americans are subjected to drug testing in the workplace. the tests are not always reliable. a false positive rate of 5% is considered to be a conservative estimate. suppose that there are 20 employees in your company, which tests its workers weekly.
1) what is the probability of no false-positives for this week’s test?

Which of these equations, when solved, gives a different value of x than the other three? a9.1 = -0.2x + 10 b10 = 9.1 + 0.2x c10 – 0.2x = 9.1 d9.1 – 10 = 0.2x

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.