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vovikov84 [41]
3 years ago
12

Math and answer please than you

Mathematics
2 answers:
finlep [7]3 years ago
6 0

Answer:

6

Step-by-step explanation:

C^2 = A^2 + B^2

plug in numbers

100 = 64 + B^2

36 = b^2

square

b = 6

elena55 [62]3 years ago
5 0

Answer:

6

Step-by-step explanation:

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Step-by-step explanation:

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2 years ago
Assume the general population gets an average of 7 hours of sleep per night. You randomly select 45 college students and survey
tekilochka [14]

Answer:

a) ii. This is a left-tailed test.

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c) -1.301

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Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = 7 hours

Sample mean, \bar{x} = 6.87 hours

Sample size, n = 45

Alpha, α = 0.10

Sample standard deviation, s =  0.55 hours

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H_{0}: \mu = 7\text{ hours}\\H_A: \mu < 7\text{ hours}

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t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

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t_{stat} = \displaystyle\frac{6.87 - 7}{\frac{0.55}{\sqrt{45}} } =-1.59

c) Now,

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t_{stat} < t_{critical}

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e) Option i) The data supports the claim that college students get less sleep than the general population.

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3 years ago
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kodGreya [7K]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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