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Is a measure of 30 inches​ "far away" from a mean of 18 ​inches? As someone...

Is a measure of 30 inches​ "far away" from a mean of

18 ​inches? As someone with knowledge of​ statistics, you answer​ "it depends" and request the standard deviation of the underlying data.

​(a) Suppose the data come from a sample whose standard deviation is 3 inches. How many standard deviations is

30 inches from 18 ​inches?

​(b) Is 30 inches far away from a mean of 18 ​inches?

​(c) Suppose the standard deviation of the underlying data is 9 inches. Is 30 inches far away from a mean of

18 ​inches?

30 inches is______standard​ deviation(s) away from 18 inches.

​(Type an integer or decimal rounded to one decimal place as​ needed.)

Math   Statistics-And-Probability   
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