7.20 Let x denote the lifetime (in thousands of hours)

of a certain type of fan used in diesel engines. The density curve of x is as pictured:

Shade the area under the curve corresponding to each of the following probabilities (draw a new curve for each part):

a. P110 , x , 252

b. P110 # x # 252

c. P1x , 302

d. The probability that the lifetime is at least 25,000 hours

e. The probability that the lifetime exceeds 25,000 hours

Transcribed Image Text:

0 25 50