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Andrew [12]
3 years ago
14

Help!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
SIZIF [17.4K]2 years ago
7 0

Answer: 23.809523809524%

or just 23.8%

Step-by-step explanation:

FrozenT [24]2 years ago
6 0

Answer:

23.8095238095%

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Neporo4naja [7]

Answer is in screenshot. Can I now have Brainliest?

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2 years ago
Answer quickly please
Olin [163]

Answer:

Step-by-step explanation:

A. 3000/50 is 60

4 0
2 years ago
McAllister et al. (2012) compared varsity football and hockey players with varsity athletes from noncontact sports to determine
jonny [76]

Answer:

t _{critical} = 1.760

t = 2.2450

d. 0.264

Step-by-step explanation:

The null hypothesis is:

H_o: \mu_1 - \mu_2 = 0

Alternative hypothesis;

H_a : \mu_1 - \mu_2 > 0\\

The pooled variance t-Test would have been determined if the population variance are the same.

S_p^2 = \dfrac{(n_1-1)S_1^2+(n_2-1)S^2_2}{(n_1-1)+(n_2-1)}

S_p^2 = \dfrac{(8-1)2.507^2+(8-1)2.8282^2}{(8-1)+(8-1)}

S_p^2 = 7.14

The t-test statistics can be computed as:

t= \dfrac{(x_1-x_2)-(\mu_1 - \mu_2)}{\sqrt{Sp^2 ( \dfrac{1}{n} +\dfrac{1}{n_2})}}

t= \dfrac{(9-6)-0}{\sqrt{7.14 ( \dfrac{1}{8} +\dfrac{1}{8})}}

t= \dfrac{3}{1.336}

t = 2.2450

Degree of freedom df = (n_1 -1) + ( n_2 +1 )

df = (8-1)+(8-1)

df = 7 + 7

df = 14

At df = 14 and ∝ = 0.05;

t _{critical} = 1.760

Decision Rule: To reject the null hypothesis if the t-test is greater than the critical value.

Conclusion: We reject H_o and there is sufficient evidence to conclude that the test scores for contact address s less than Noncontact athletes.

To calculate r²

The percentage of the variance is;

r^2 = \dfrac{t^2}{t^2 + df}

r^2 = \dfrac{2.2450^2}{2.2450^2 + 14}

r^2 = \dfrac{5.040025}{5.040025+ 14}

r^2 = 0.2647

7 0
3 years ago
Did I do this Math Right
kakasveta [241]
I cant answer if i dont know what math would you mind telling me what math

6 0
3 years ago
the perimeter of a regular pentagon is 41.5 cm. Write and solve an equation to determine the length of each side of the pentagon
ser-zykov [4K]
It would be 41.5 divided by 5 because a pentagon has 5 sides
6 0
3 years ago
Read 2 more answers
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