Business Statistics

216 Business Statistics

P(6  x    l = )

= P(x = 6) + P(x = 7) + P(x = 8) + P(x = 9) + P(x = 10)

= 0.063055 + 0.090079 + 0.112599 + 0.125110 + 0.125110 = 0.5159

Figure 6.34 is the Minitab output exhibiting the computation of different individual poisson

probabilities for x = 0 to x = 10 (for Example 6.10)

Example 6.11 Major problems in aircraft landing are very rare in an international air-

port. The number of major problems are Poisson distributed with mean 5

per year.

(a) What is the probability that no major problem will occur in a year?

(b) What is the probability that exactly three major problems will occur in a year?

(c) ...