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Compute the range and sample standard deviation for strength of the concrete​ (in psi). 3910 ​,...

Compute the range and sample standard deviation for strength of the concrete​ (in psi).

3910 ​, 4100 ​, 3400 ​, 3000 ​, 2940 ​, 3820 ​, 4100 ​, 4050

The range is ____psi.

s=___ psi​ (Round to one decimal place as​ needed.)

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

Answer:-

Given that:-

Range =Maximum value - Minimum value = 4100-2940 =1160

(2)Sample mean

x
3940 258.75 66951.5625
4100 418.75 175351.5625
3400 -281.25 79101.5625
3000 -681.25 464101.5625
2940 -741.25 549451.5625
3820 138.75 19251.5625
4100 418.75 175351.5625
4050 368.75 135976.5625
Total 1665537.5

VarianceSo,

Standard deviation =

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