Question

27. No matter what data you start with, what percentage of values will fall within 4 standard deviations of the mean? Why? 28. Given mound-shaped data, what percentage of values falls within 2 standard deviations of the mean? Why? 29. Given a large group of means, what percentage of them falls within 1.34 standard deviations of the mean? Why? 

          27. No matter what data you start with, what percentage of values will fall
within 4 standard deviations of the mean? Why?
28. Given mound-shaped data, what percentage of values falls within 2
standard deviations of the mean? Why?
29. Given a large group of means, what percentage of them falls within
1.34 standard deviations of the mean? Why?
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27. No matter what data you start with, what percentage of values will fall within 4 standard deviations of the mean? Why? 28. Given mound-shaped data, what percentage of values falls within 2 standard deviations of the mean? Why? 29. Given a large group of means, what percentage of them falls within 1.34 standard deviations of the mean? Why?

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Precalculus with Limits
Precalculus with Limits
Ron Larson 2nd Edition
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Help! Why are values within 4 standard deviations of the mean important? 28. Given mound-shaped data, what percentage of values falls within 2 standard deviations of the mean? Why? 29. Given a large group of means, what percentage of them falls within 1.34 standard deviations of the mean? Why?
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Transcript

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00:01 In this problem first i'm just writing the given data.
00:04 So here the value of mu is given as 28 and the value of sigma is given as 4.
00:12 Now the proportion of the data points that are below 24 is given by the formula p x is less than 24 which is equal to p z is less than 24 minus 28 by 4.
00:32 So it will be equal to p z is less than minus 1...
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