Car speeds John Beale of Stanford, CA, recorded thespeeds of cars driving past his house, where the speedlimit was 20 mph. The mean of 100 readings was23.84 mph, with a standard deviation of 3.56 mph. (Heactually recorded every car for a two-month period.These are 100 representative readings.)a) How many standard deviations from the mean woulda car going under the speed limit be?b) Which would be more unusual, a car traveling 34 mphor one going 10 mph?
Car speeds John Beale of Stanford, CA, recorded thespeeds of cars driving past his house, where the speedlimit was 20 mph. The mean of 100 readings was23.84 mph, with a standard deviation of 3.56 mph. (Heactually recorded every car for a two-month period.These are 100 representative readings.)a) How many standard deviations from the mean woulda car going under the speed limit be?b) Which would be more unusual, a car traveling 34 mphor one going 10 mph?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Car speeds John Beale of Stanford, CA, recorded the
speeds of cars driving past his house, where the speed
limit was 20 mph. The mean of 100 readings was
23.84 mph, with a standard deviation of 3.56 mph. (He
actually recorded every car for a two-month period.
These are 100 representative readings.)
a) How many standard deviations from the mean would
a car going under the speed limit be?
b) Which would be more unusual, a car traveling 34 mph
or one going 10 mph?
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