What is the probability that a trip will

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A drive from Omaha to Kansas City takes 150 minutes normally distributed, with a standard deviation of 10 minutes. Use this information to solve questions 41 to 44.

1)   What is the probability that a trip will take less than 140 minutes?

A.  0.841

B.   0.680

C.   0.324

D.  0.159

2)   What is the probability that a trip will take more than 172 minutes?

A.  0.014

B.   0.220

C.   0.517

D.  0.986

3)   What is the probability that a trip will take between 142 and 155 minutes?

A.  0.691

B.   0.347

C.   0.480

D.  0.212

4)   What is the probability the trip will take exactly 150 minutes?

A.  0.500

B.   0.040

C.   0.712

D.  0

A certain make of tire has a mean life expectancy of 50,000 miles (exponentially distributed). Use this information to solve questions 45 to 47.

5)   What is the probability that a random tire will last less than 30,000 miles?

A.  0.451

B.   0.632

C.   0.600

D.  0.247

6)   What is the probability that a random tire will last more than 70,000 miles?

A.  0.714

B.   0.247

C.   0.124

D.  0.753

7)   What is the probability that a random tire will last between 40,000 and 60,000 miles?

A.  0.699

B.   0.327

C.   0.551

D.  0.148

Reference no: EM131843430

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