Use the Empirical Rule to find the following probabilities. It is suggested that you 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 attempting to answer the questions. The average life-span of a True Test auto battery is 39 months with a standard deviation of 3 months. Assume a normal distribution. 1. We can expect 95% of the batteries to last between and months. 2. We can expect %-of the batteries to last less than 30 months. 3. We can expect % of the batteries to last longer than 42 months. 4. We can expect % of the batteries to last between 30 and 39 months. 5. We can expect % of the batteries to last between 42 and 48 months
Use the Empirical Rule to find the following probabilities. It is suggested that you 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 attempting to answer the questions. The average life-span of a True Test auto battery is 39 months with a standard deviation of 3 months. Assume a normal distribution. 1. We can expect 95% of the batteries to last between and months. 2. We can expect %-of the batteries to last less than 30 months. 3. We can expect % of the batteries to last longer than 42 months. 4. We can expect % of the batteries to last between 30 and 39 months. 5. We can expect % of the batteries to last between 42 and 48 months
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Empirical Rule
Use the Empirical Rule to find the following probabilities. It is suggested that
you draw a normal curve, label the x-values for 1, 2, and 3 standard deviations
from the mean, and write in the probabilities between each standard deviation
before attempting to answer the questions.
The average life-span of a True Test auto battery is 39 months with a standard
deviation of 3 months. Assume a normal distribution.
1. We can expect 95% of the batteries to last between
and
months.
2. We can expect
%.of the batteries to last less than 30
months.
3. We can expect
% of the batteries to last longer than 42
months.
4. We can expect
% of the batteries to last between 30 and
39 months.
5. We can expect
% of the batteries to last between 42 and
48 months.
3:02 PM
12/9/2020
II
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