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In: Statistics and Probability

The certificate in Computers has a duration which approximates a normal distribution with a mean of...

The certificate in Computers has a duration which approximates a normal distribution with a mean of 266 months and a standard deviation of 16 months. What is the probability that the certificate last between 240 and 270 days? *

Solutions

Expert Solution

µ = 266

                                         

                                          = P(-1.625 < Z < 0.25)

                                          = P(Z < 0.25) - P(Z < -1.625)

                                          = 0.5987 - 0.0521

                                          = 0.5466

orchestra answered 1 year ago
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