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sesenic [268]
3 years ago
7

Which is the best estimate for the value of point C?

Mathematics
1 answer:
Georgia [21]3 years ago
5 0
Hello,

We may suppose that abscisse of C is 21 or 22

As √484=22

Answer D: \sqrt{484}
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Please help me simplified this
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For this case we have that by definition, the perimeter of the quadrilateral shown is given by the sum of its sides:

Let "p" be the perimeter of the quadrilateral, then:

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A university researcher wants to estimate the mean number of novels that seniors read during their time in college. An exit surv
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Answer:

Population mean = 7 ± 2.306 × \frac{2.29}{\sqrt{9} }

Step-by-step explanation:

Given - A university researcher wants to estimate the mean number

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            survey was conducted with a random sample of 9 seniors. The

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To find - Assuming that all conditions for conducting inference have

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Proof -

Given that,

Mean ,x⁻ = 7

Standard deviation, s = 2.29

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Now,

Degrees of freedom = df

                                = n - 1

                                = 9 - 1

                                = 8

⇒Degrees of freedom = 8

Now,

At 94.645% confidence level

α = 1 - 94.645%

   =1 - 0.94645

  =0.05355 ≈ 0.05

⇒α = 0.5

Now,

\frac{\alpha}{2} = \frac{0.05}{2}

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Then,

t_{\frac{\alpha}{2}, df }  = 2.306

∴ we get

Population mean = x⁻ ± t_{\frac{\alpha}{2}, df } ×\frac{s}{\sqrt{n} }

                           = 7 ± 2.306 × \frac{2.29}{\sqrt{9} }

⇒Population mean = 7 ± 2.306 × \frac{2.29}{\sqrt{9} }

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Answer:

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