Answer Happy

In the following problem, check that it is appropriate to use the normal approximation to the binomial. Then use the normal distribution to estimate the requested probabilities. It is known that 84% of all new products introduced in grocery stores fail (are taken off the market) within 2 years. If a grocery store chain introduces 68 new products, find the following probabilities. (Round your answers to four decimal places.) LAUSE SALT (a) within 2 years 47 or more fail 0.9998 (b) within 2 years 58 or fewer fail 0.6772 (c) within 2 years 15 or more succeed 0.1151 (d) within 2 years fewer than 10 succeed 0.3855 x Need Help? Read It 8. [-/4.54 Points] DETAILS MY NOTES ASK YOUR TEACHER In the following problem, check that it is appropriate to use the normal approximation to the binomial. Then use the normal distribution to estimate the requested probabilities. BBUNDERSTAT12 6.6.012.S. PRACTICE ANOTHER What are the chances that a person who is murdered actually knew the murderer? The answer to this question explains why a lot of police detective work begins with relatives and friends of the victim! About 63% of people who are murdered actually knew the person who committed the murder. Suppose that a detective file in New Orleans has 58 current unsolved murders. Find the following probabilities. (Round your answers to four decimal places.) USE SALT (a) at least 35 of the victims knew their murderers (b) at most 48 of the victims knew their murderers (c) fewer than 30 victims did not know their murderers (d) more than 20 victims did not know their murderers