Blood type AB is found in only 3% of the population. If 300 people are chosen at random, find the probability of the following. (Use the normal approximation. Round your answers to four decimal places.) LL USE SALT (a) 5 or more will have this blood type (b) between 5 and 10 will have this blood type Need Help? Read 13. [-/3 Points] DETAILS BBBASICSTAT8 7.R.020.S. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The Customer Service Center in a large New York department store has determined that the amount of time spent with a customer about a complaint is normally distributed, with a mean of 8.7 minutes and a standard deviation of 2.9 minutes. What is the probability that for a randomly chosen customer with a complaint, the amount of time spent resolving the complaint will be as follows. (Round your answers to four decimal places.) LO USE SALT (a) less than 10 minutes b) longer than 5 minutes (c) between 8 and 15 minutes Need Help? Read It14. [-/2 Points] DETAILS BBBASICSTAT8 7.R.021.S. One environmental group did a study of recycling habits in a California community. It found that 75% of the aluminum cans sold in the area were recycled. (Use the normal approximation. Round your answers to four decimal places.) LAL USE SALT a) If 383 cans are sold today, what is the probability that 300 or more will be recycled? (b) Of the 383 cans sold, what is the probability that between 260 and 300 will be recycled? Need Help? Read It 15. [-/2 Points] DETAILS BBBASICSTAT8 7.R.022.S. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Many people consider their smart phone to be essential! Communication, news, Internet, entertainment, photos, and just keeping current are all conveniently possible with a smart phone. However, the battery better be charged or the phone is useless. Battery life of course depends on the frequency, duration, and type of use. One study involving heavy use of the phones showed the mean of the battery life to be 14.25 hours with a standard deviation of 2.3 hours. Then the battery needs to be recharged. Assume the battery life between charges is normally distributed. In USE SALT (a) Find the probability that with heavy use, the battery life exceeds 15 hours. (Round your answer to four decimal places.) b) You are planning your recharging schedule so that the probability your phone will die is no more than 5%. After how many hours should you plan to recharge your phone? (Round your answer to the nearest tenth of an hour.) hours Need Help Read n