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Vikentia [17]
3 years ago
12

Help??? It’s pretty complicated, well for me.

Mathematics
1 answer:
masha68 [24]3 years ago
8 0

Answer:

The first box is 10.2

The second box is 15.

The last box is 76.

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A company has developed a training procedure to improve scores on the SAT. Following the training, 100 high school students take
Pani-rosa [81]

Answer:

The calculated t-test = 1.717 < 1.6604 at 0.05 level of significance

Null hypothesis is accepted at 0.05 level of significance

A company has developed a training procedure is significantly improve scores

Step-by-step explanation:

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

Given  sample mean (x⁻ )  = 517

sample standard deviation (s) =90

Mean of the Population (μ) =500

<em>Null Hypothesis :- H₀ :  </em> (μ) =500

Alternative Hypothesis : H₁ :  μ ≠ 500

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

Test statistic

                         t = \frac{x^{-} -mean}{\frac{s}{\sqrt{n} } }

                        t = \frac{517 -500}{\frac{90}{\sqrt{100} } }

                        t  =   1.717

<em>Level of significance</em>

                      ∝ = 0.05

                    t₀.₀₅ = 1.6604

The calculated t-test = 1.717 < 1.6604 at 0.05 level of significance

<u><em>Conclusion</em></u>:-

Null hypothesis is accepted at 0.05 level of significance

A company has developed a training procedure is significantly improve scores

3 0
3 years ago
The midpoint of mn is point p at (-4,6). If point m is at (8,-2), what are the coordinates of point n?
VashaNatasha [74]
<u>x₁ + x₂</u>                             <u>y</u>₁ + <u>y</u>₂<u>
</u>     2      = M                        2     = M
<u>
x + 8</u>                                 <u>y + -2</u><u>
</u>    2    = -4                            2           =6
<u>multiply both sides by 2.

</u>x+8=-8                             y - 2 = 12
<u>x = -16</u>                             <u>y = 14
</u>
Final Answer: (-16, 14)



7 0
3 years ago
Read 2 more answers
Using the quadratic formula to solve 5x = 6x- - 3, what are the values of x?
goldfiish [28.3K]

Answer:

x= -3

Step-by-step explanation:

Solve the rational equation by combining expressions and isolating the variable  x.

8 0
2 years ago
Read 2 more answers
How do i make 45/150 a fraction and a decimal
max2010maxim [7]
0.3 is the decimal of 45/150 

To change fraction into decimal you need the divide the denominator by the numerator.
So  150 divided by 45 is 0.3.
3 0
3 years ago
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Find the common ratio of the sequence. 3, 9, 27, 81, . . .
mrs_skeptik [129]
The answer to this question is D.
5 0
3 years ago
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