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3 years ago

Hope u can do it HELP MATH

Mathematics

2 answers:

Nostrana [21]3 years ago

5 0

Answer:

the right answer would be 13

zhenek [66]3 years ago

3 0

Answer:

Step-by-step explanation:

f (x) = x/2 + 8

If x = 10, replace the x with 10.

f (x) = 10 / 2 + 8

f (x) = 5 + 8

f (x) = 13

Always happy to help <3

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3 years ago

3 times a number is 54 less than the square of that number

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choli [55]

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It is not enough evidence to reject null hypothesis. It is not enough evidence to say that mean score is not equal to 35.

Step-by-step explanation:

$\mu=35\\n=23\\\=x=33\\s=5\\\alpha=0.1$

1. Null and alternative hypothesis

$H_{0}:\mu=35\\H_{1}:\mu$

2. Significance level

$\alpha=0.1\\1-\alpha=0.99$

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$v=n-1\\v=23-1=22$

For a sgnificance level of 0,01 and 22 freedom degrees, t-student distribution value is:

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3. Test statistic

$t=\frac{\=x-\mu}{\frac{s}{\sqrt{n} } }$

$t=\frac{33-35}{\frac{5}{\sqrt{23} } }$

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In this case, we have an one left tailed analysis, it means that null hypothesis is rejected if $t$

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Conclusion:

It is not enough evidence to reject null hypothesis. It is not enough evidence to say that mean score is not equal to 35.

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