Question

11. Identify the correct probability distribution based on the research question below: Customer friendly banks with open floor plans, multiple entrances, and no "bandit barriers" - the think, clear walls between tellers and customers - are being blamed for an increase in bank robberies. Bank robberies in six northern New Jersey counties increased from 44 in 2006 to a rate of 75 per year in 2007. (Source: C. J. Hughes, "An increase in banks and robberies: Customer-friendly branches are vulnerable, police say," The New York Times, August 12, 2007.) What's the probability that there will be more than eight bank robberies in northern New Jersey next month, assuming the new rate holds? a. Binomial distribution. b. Geometric distribution. c. Poisson distribution. d. Standard normal distribution.

Answer 1

#11.
This is poisson distribution

Option C

12)
Alternative Hypothesis, Ha: μ < 20

option D