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Evgesh-ka [11]
3 years ago
12

I need the answer to this problem please help me

Mathematics
1 answer:
LekaFEV [45]3 years ago
7 0
I'm pretty sure both B and C equal 12 as well
Since the triangle equals 180 and the angels are all congruent
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The first eight quizzes in this class had average scores of 8,9,9,8,8,9,8,7. This gives a sample mean of 8.25 and a sample stand
alexira [117]

Answer:

<em>Test statistic </em>

<em>               </em>t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }  

            t = <em>1.076</em>

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given Mean of the Population (μ) = 8.0

<em>Mean of the sample (x⁻) = 8.25</em>

Given data

                  8,9,9,8,8,9,8,7

Given sample size  n= 8

Given sample standard deviation(S) = 0.661

<u><em>Step(ii):-</em></u>

<em>Null hypothesis : H:  (μ) = 8.0</em>

<em>Alternative Hypothesis :H:(μ) > 8.0</em>

<em>Degrees of freedom = n-1 = 8-1=7</em>

<em>Test statistic </em>

<em>               </em>t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }<em></em>

<em>              </em>t = \frac{8.25 -8.0}{\frac{0.661}{\sqrt{8} } }<em></em>

<em>            t =  1.076</em>

<em>Critical value </em>

<em>                    t₍₇,₀.₀₅₎   = 2.3646</em>

<em>The calculated value   t =  1.076 < 2.3646 at 0.05 level of significance</em>

<em>Null hypothesis is accepted</em>

<em>Test the hypothesis that the true mean quiz score is 8.0 against the alternative that it is not greater than 8.0</em>

<em></em>

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3 years ago
I need y’all help asap
Natasha2012 [34]
It is 8 to the one third power which is the same as the cube root of 8 which is 2. The answer is 2
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3 years ago
Determine the value of x.
Mama L [17]

Answer:

9

Step-by-step explanation:

because the shape is equal and 106 minus 97 is 9.

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2 years ago
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Simpify the expression. -2(y + 3) -7y
jenyasd209 [6]
-2y-6-7y
-9y-6
I hope that this helps!
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2 years ago
What is the area of a triangle whose vertices are D(3, 3) , E(3, −1) , and F(−2, −5) ? Enter your answer in the box.
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the answer is 5. hope this helps

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