According to a 2009 Reader's Digest article, people throw away about 11% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 79 grocery shoppers to investigate their behavior. What is the probability that the sample proportion does not exceed 0.18? Note: Calculate z to two decimal places. Answer =  (Enter your answer as a number accurate to 4 decimal places.)

Find the 90th percentile. So 10% of the TV sets last more than what length of time?

An insurance company crashed four cars of the same model at 5 miles per hour. The costs of repair for each of the four crashes were $406, $414, $483, and $217 O . Compute the mean, median, and mode cost of repair. Compute the mean cost of repair. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The mean cost of repair is $ (Round to the nearest cent as needed.) B. The mean does not exist. Compute the median cost of repair. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The median cost of repair is $ (Round to the nearest cent as needed.) B. The median does not exist. Compute the mode cost of repair. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The mode cost of repair is $ -(Round to the nearest cent as needed.) B. The mode does not exist.

What is the probability of flipping a coin 85 times and getting tails 30 times or fewer? Round your answer to the nearest tenth of a percent. A. 95.9% O B. 0.4% C. 99.8% OD. 33.2%