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lukranit [14]
3 years ago
8

State the domain of d.

Mathematics
2 answers:
Mila [183]3 years ago
5 0

domain is for variable x

ans is

<u>x</u>

<u>≥</u>

<u>0</u>


tester [92]3 years ago
4 0

d(x) = { (x,y): y = sqrt(x) and y >=0 }

since sqrt function requires x to be >=0 so

<u>x >= 0</u>

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Answer:

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

b) -1.59

c) -1.301

d) i. reject null hypothesis

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

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Population mean, μ = 7 hours

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Alpha, α = 0.10

Sample standard deviation, s =  0.55 hours

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

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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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