Question

12.) Pinky Bauer, Chief Financial Officer of Harrison Haulers, Inc., suspects irregularities in the payroll system. If 10% of the 5,000 payroll vouchers issued since January 1, 2000, have irregularities, the probability that Pinky's random sample of 200 vouchers will have a sample proportion greater than .06 is ___________.

a.) 0.4706

b.) 0.9706

c.) 0.0588

d.) 0.9412

e.) 0.9876

13.) In an instant lottery, your chance of winning is 0.1. If you play the lottery 100 times and outcomes are independent, the probability that you win at least 15 percent of the time is

a.) 0.4933 b.) 0.5 c.) .15 d.) 0.0478 e.) 0.9213 14.) According to the central limit theorem, if a sample of size 100 is drawn from a population with a standard deviation of 80, the standard deviation of sample means would equal _______. a.) 0.80 b.) 8 c.) 80 d.) 800 e.) 0.080

Answer 1

12) b) is correct

寸(シー1.87)