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Get Full Access to Stats: Data And Models - 4 Edition - Chapter 5 - Problem 10e
Get Full Access to Stats: Data And Models - 4 Edition - Chapter 5 - Problem 10e

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# Car speeds again For the car speed data of Exercise, ISBN: 9780321986498 70

## Solution for problem 10E Chapter 5

Stats: Data and Models | 4th Edition

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Problem 10E

Problem 10E

Car speeds again For the car speed data of Exercise, recall that the mean speed recorded was 23.84 mph, with a standard deviation of 3.56 mph. To see how many cars are speeding, John subtracts 20 mph from all speeds.

a) What is the mean speed now? What is the new standard 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?

Exercise

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?

Step-by-Step Solution:
Step 1 of 3

h t g Week3Notes n • AverageVelocity e o v=Δx/Δt • AverageSpeed L o PathLength/Δt h t - a -- P -- Δ - - Example#1:BIKETRIP North5blocksin5minutes East3blocksin6minutes South5blocksin10minutes Findthetotalaveragespeedandtotalaveragevelocity. PathLength=5+3+5=13

Step 2 of 3

Step 3 of 3

##### ISBN: 9780321986498

This full solution covers the following key subjects: mph, Car, speeds, standard, speed. This expansive textbook survival guide covers 12 chapters, and 679 solutions. This textbook survival guide was created for the textbook: Stats: Data and Models , edition: 4. Since the solution to 10E from 5 chapter was answered, more than 476 students have viewed the full step-by-step answer. Stats: Data and Models was written by and is associated to the ISBN: 9780321986498. The full step-by-step solution to problem: 10E from chapter: 5 was answered by , our top Statistics solution expert on 08/30/17, 07:04AM. The answer to “Car speeds again For the car speed data of Exercise, recall that the mean speed recorded was 23.84 mph, with a standard deviation of 3.56 mph. To see how many cars are speeding, John subtracts 20 mph from all speeds.a) What is the mean speed now? What is the new standard 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?ExerciseCar 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?” is broken down into a number of easy to follow steps, and 175 words.

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