Question
In: Statistics and Probability
Speeding on the I-5. Suppose the distribution of passenger vehicle speeds traveling on the Interstate 5...
Speeding on the I-5. Suppose the distribution of passenger vehicle speeds traveling on the Interstate 5 Freeway (I-5) in California is nearly normal with a mean of 70.4 miles/hour and a standard deviation of 4.5 miles/hour. Round all answers to four decimal places.
1. What proportion of passenger vehicles travel slower than 80 miles/hour?
2. What proportion of passenger vehicles travel between 73 and 79 miles/hour?
3. How fast do the fastest 8% of passenger vehicles travel? miles/hour
4. Suppose the speed limit on this stretch of the I-5 is 70 miles/hour. Approximately what proportion of the passenger vehicles travel above the speed limit on this stretch of the I-5?
Solutions
Expert Solution
Let X denotes the vehicle speed of a randomly selected passenger traveling on the Interstate 5 Freeway (I-5) in California.
X ~ Normal(70.4, 4.52)
a) The proportion of passenger vehicles travel slower than 80 miles/hour
2) The proportion of passenger vehicles travel between 73 and 79 miles/hour
3) To find x such that
4) The proportion of the passenger vehicles travel above the speed limit on this stretch of the I-5
orchestra answered 2 years agoRelated Solutions
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1.) Bringing all of section 6.2 together... The distribution of passenger vehicle speeds traveling on the...
1.)
Bringing all of section 6.2 together...
The distribution of passenger vehicle speeds traveling on the
Interstate 5 Freeway (I-5) in California is nearly normal with a
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miles/hour?
% (round to two decimal places)
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10
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9
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5
35
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