The distribution of passenger vehicle speeds traveling on a certain freeway in California is nearly normal with a mean of 73,7 miles/hour and a standar deviation of 4.75 miles/hour. (a) What percent of passenger vehicles travel slower than 80 miles/hour? (Round your answer to two decimal places.) 90.82 % (b) What percent of passenger vehicles travel between 60 and 80 miles/hour? (Round your answer to two decimal places.) % (c) How fast do the fastest 5% of passenger vehicles travel? (Round your answer to four decimal places.) mph (d) The speed limit on this stretch of the freeway is 70 miles/hour. Approximate what percentage of the passenger vehicles travel above the speed la on this stretch of the freeway. (Round your answer to two decimal places.) 22.12 X%
The distribution of passenger vehicle speeds traveling on a certain freeway in California is nearly normal with a mean of 73,7 miles/hour and a standar deviation of 4.75 miles/hour. (a) What percent of passenger vehicles travel slower than 80 miles/hour? (Round your answer to two decimal places.) 90.82 % (b) What percent of passenger vehicles travel between 60 and 80 miles/hour? (Round your answer to two decimal places.) % (c) How fast do the fastest 5% of passenger vehicles travel? (Round your answer to four decimal places.) mph (d) The speed limit on this stretch of the freeway is 70 miles/hour. Approximate what percentage of the passenger vehicles travel above the speed la on this stretch of the freeway. (Round your answer to two decimal places.) 22.12 X%
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 23PFA
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![The distribution of passenger vehicle speeds traveling on a certain freeway in California is nearly normal with a mean of 73.7 miles/hour and a standard
deviation of 4.75 miles/hour.
(a) What percent of passenger vehicles travel slower than 80 miles/hour? (Round your answer to two decimal places.)
90.82
%
(b) What percent of passenger vehicles travel between 60 and 80 miles/hour? (Round your answer to two decimal places.)
%
(c) How fast do the fastest 5% of passenger vehicles travel? (Round your answer to four decimal places.)
mph
(d) The speed limit on this stretch of the freeway is 70 miles/hour. Approximate what percentage of the passenger vehicles travel above the speed limit
on this stretch of the freeway. (Round your answer to two decimal places.)
22.12
X%](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fda0442f0-082c-40d3-95ab-8cd5dccad2c3%2F0f9ad302-1e85-463c-9984-650bc6b9a273%2F1j7xf3_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The distribution of passenger vehicle speeds traveling on a certain freeway in California is nearly normal with a mean of 73.7 miles/hour and a standard
deviation of 4.75 miles/hour.
(a) What percent of passenger vehicles travel slower than 80 miles/hour? (Round your answer to two decimal places.)
90.82
%
(b) What percent of passenger vehicles travel between 60 and 80 miles/hour? (Round your answer to two decimal places.)
%
(c) How fast do the fastest 5% of passenger vehicles travel? (Round your answer to four decimal places.)
mph
(d) The speed limit on this stretch of the freeway is 70 miles/hour. Approximate what percentage of the passenger vehicles travel above the speed limit
on this stretch of the freeway. (Round your answer to two decimal places.)
22.12
X%
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