7)According to a 2009 Reader's Digest article, people throw away approximately 14% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 129 grocery shoppers to investigate their behavior. What is the probability that the sample proportion exceeds 0.15?

Note: You should carefully round any intermediate values you calculate to 4 decimal places to match wamap's approach and calculations. Answer =

8)We wish to estimate what percent of adult residents in a certain county are parents. Out of 500 adult residents sampled, 390 had kids. Based on this, construct a 99% confidence interval for the proportion pp of adult residents who are parents in this county. (Use technology; do not assume specific values ofz.z.) Give your answers as decimals, to 4 places. Answer =