Find a z value such that the probability of obtaining a larger z value is only 0.15

The Denver Post reported that, on average, a large shopping center had an incident of shoplifting caught by security 2.1 times every two hours. The shopping center is open from 10 A.M. to 9 P.M. (11 hours). Let r be the number of shoplifting incidents caught by security in an 11-hour period during which the center is open. What is λ? (Use 2 decimal places.)(b) What is the probability that from 10 A.M. to 9 P.M. there will be at least one shoplifting incident caught by security? (Use 4 decimal places.)(c) What is the probability that from 10 A.M. to 9 P.M. there will be at least three shoplifting incidents caught by security? (Use 4 decimal places.)

The probability of a false positive test result is 0.168 (Round to three decimal places as needed.) Who would suffer from a false positive result? Why? O A. The person tested would suffer because he or she would not be suspected of using drugs when in reality he or she does use drugs. O B. The employer would suffer because the person tested would be suspected of using drugs when in reality he or she does not use drugs. O C. The person tested would suffer because he or she would be suspected of using drugs when in reality he or she does not use drugs. O D. The employer would suffer because the person tested would not be suspected of using drugs when in reality he or she does use drugs.

The probability of a Type II error is represented by the symbol B (beta). O True O False