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lana [24]
3 years ago
8

Johnny did some work for his grandpa. He worked for 7 hours on Friday and 6 hours on Saturday. His grandpa paid him $91 for the

work. How much money did Johnny earn per hour?
Mathematics
1 answer:
Ivanshal [37]3 years ago
5 0
7 dollars per hour!!!!
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If Professor Wilson found that the test scores of his students had a variance of 4.4, what is the standard deviation? Type a num
malfutka [58]

Answer:

The standard deviation will be: 2.1        

Step-by-step explanation:

We know that standard deviation is basically the square root of variance.

Using the formula to calculate the standard deviation

s=\sqrt{s^2}

As

  • The variance =  s² = 4.4

so the standard deviation can be calculated as:

standard deviation =\sqrt{s^2}

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Therefore, the standard deviation will be: 2.1                      

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Step-by-step explanation:

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Ierofanga [76]
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kap26 [50]

Answer:

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Answer:

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