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QUESTION 3 Find the percentile that corresponds to z 2 State the answer only and no additional work. Do not state the percent sign and state as an integer. Do not round the answer.
QUESTION 1 95% of the vehicles traveling down a highway are going between 52 mph and 71 mph. If there are 80 vehicles on the highway, then estimate the number of vehicles going between 52 mph and 71 mph State the answer only and no additional work. Do not label the answer.
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Answer #1

Question 3) We want to find, the percentile that corresponds to z = 2

That is to find, P(Z < 2)

Using standard normal z-table we get,

P(Z < 2) = 0.9772

Question 1) Given that, 95% of the vehicle traveling down a highway are going between 52 mph and 71 mph. If there are 80 vehicles on the highway.

Then the estimated number of vehicles going between 52 mph and 71 mph = 80 * 0.95 = 73.6

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