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Category > Statistics Posted 31 May 2017 My Price 5.00

Assume the speed of vehicles along a stretch of I-10 has an approximately normal distribution

Assume the speed of vehicles along a stretch of I-10 has an approximately normal distribution with a mean of 71 mph and a standard deviation of 8 mph.

a. The current speed limit is 65 mph. What is the proportion of vehicles less than or equal to the speed limit?

b. What proportion of the vehicles would be going less than 50 mph?

 

c. A new speed limit will be initiated such that approximately 10% of vehicles will be over the speed limit. What is the new speed limit based on this criterion?

Answers

Alpha Geek
(8)
Status NEW Posted 31 May 2017 07:05 AM My Price 5.00

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file 1496217354-Answer.docx preview (185 words )
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