Body mass index (BMI) is calculated by dividing a person’s weight by the square of their height. The BMI for middle aged men at risk for diabetes follows approximately normal distribution with a population mean = 24 kg/m2 and population standard deviation of 2.7 kg/m2. A sample of 60 men are randomly selected from the population. The mean BMI from this sample is 26 kg/m2. Calculate a z score for this data and depict the z score on a standard normal curve.

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.