Car speeds again For the car speed data of Exercise 18,recall that the mean speed recorded was 23.84 mph, with a standard deviation of 3.56 mph. To see howmany cars are speeding, John subtracts 20 mph fromall speeds. a) What is the mean speed now? What is the new stan-dard deviation? b) His friend in Berlin wants to study the speeds, so Johnconverts all the original miles-per-hour readings tokilometers per hour by multiplying all speeds by 1.609(km per mile). What is the mean now? What is the newstandard deviation?
Car speeds again For the car speed data of Exercise 18,recall that the mean speed recorded was 23.84 mph, with a standard deviation of 3.56 mph. To see howmany cars are speeding, John subtracts 20 mph fromall speeds. a) What is the mean speed now? What is the new stan-dard deviation? b) His friend in Berlin wants to study the speeds, so Johnconverts all the original miles-per-hour readings tokilometers per hour by multiplying all speeds by 1.609(km per mile). What is the mean now? What is the newstandard deviation?
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 again For the car speed data of Exercise 18,
recall that the
with a standard deviation of 3.56 mph. To see how
many cars are speeding, John subtracts 20 mph from
all speeds.
many cars are speeding, John subtracts 20 mph from
all speeds.
a) What is the mean speed now? What is the new stan-
dard deviation?
dard deviation?
b) His friend in Berlin wants to study the speeds, so John
converts all the original miles-per-hour readings to
kilometers per hour by multiplying all speeds by 1.609
(km per mile). What is the mean now? What is the new
standard deviation?
converts all the original miles-per-hour readings to
kilometers per hour by multiplying all speeds by 1.609
(km per mile). What is the mean now? What is the new
standard deviation?
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