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a hypothesis regarding the weight of newborn infants at a community hospital is that the mean is 19.1 pounds. a sample of seven infants is randomly selected and their weights at birth are recorded as 18.1, 21.1, 22.1, 23.1, 21.1, 27.1, and 27.1 pounds. what is the sample standard deviation?

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As the standard deviation for Sample Values and Population are different. The sample Standard Deviation is 5.196

What do you mean by Standard Deviation?

The standard deviation is a statistic that expresses how much variance or dispersion there is in a group of numbers.

What is the formula to calculate Standard Deviation?

Formula for standard deviation calculation is:

[tex]\sigma = \sqrt {\sum \frac {(X - \mu) ^ {2}}{N}}[/tex] (Population Standard Deviation)

[tex]s = \sqrt {\sum \frac {(X - \bar x) ^ {2}}{n-1}}[/tex] (Sample Standard Deviation)

[tex]\bar x= 19.1[/tex]

[tex]\sum {(X - \bar x) ^ {2}} = 162[/tex]

[tex]n-1 = 6[/tex]

[tex]s = \sqrt {\sum \frac {(X - \bar x) ^ {2}}{n-1}} = \sqrt {\frac {162}{6}}[/tex]

[tex]s= \sqrt 27[/tex]

[tex]s= 5.196[/tex]

To learn more about Sample Standard Deviation visit:

https://brainly.com/question/24277447

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