What is the probability that the car lot will sell at least 18 cars? What is the probability that a car lot will sell at most 26 cars?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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O Mastery X
Empirical Rule
Instructions: Use the empirical rule to find the following probabilities.
Remember to draw a normal curve, label the r-values for 1, 2, and 3 standard
deviations from the mean, and write in the probabilities between each
standard deviation before answering the questions.
On average, Upstate Chevrolet sells 20 cars each week, with a standard
deviation of 2.
How many cars sold represents 2 standard deviations above the mean?
24
How many cars sold represent 1 standard deviation below the mean?
18
Approximately 68% will fall between
18
and
22
Approximately 99.7% will fall between
14
and
26
What is the probability that the car lot will sell at least 18 cars?
What is the probability that a car lot will sell at most 26 cars?
Check
2:35 PM
%23
12/9/202
II
Transcribed Image Text:O Mastery X Empirical Rule Instructions: Use the empirical rule to find the following probabilities. Remember to draw a normal curve, label the r-values for 1, 2, and 3 standard deviations from the mean, and write in the probabilities between each standard deviation before answering the questions. On average, Upstate Chevrolet sells 20 cars each week, with a standard deviation of 2. How many cars sold represents 2 standard deviations above the mean? 24 How many cars sold represent 1 standard deviation below the mean? 18 Approximately 68% will fall between 18 and 22 Approximately 99.7% will fall between 14 and 26 What is the probability that the car lot will sell at least 18 cars? What is the probability that a car lot will sell at most 26 cars? Check 2:35 PM %23 12/9/202 II
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