Vamoppppp

21.04.2021 •

Mathematics

Select the correct answer. Which rational expression is equivalent to this expression?
4
-3
I + 2
1 - 3
4.
I + 2
OA
OB. +372
oc+=+
OD. 1.2

Select the correct answer.

Which rational expression is equivalent to this expression?
4
-3
I + 2

Solved

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Ответ:

Nay25933

28.11.2022

Mathematics

The 95% confidence interval is $9.15< \mu < 11.45$

Step-by-step explanation:

From the question we are told that

The sample size is n = 26

The mean is $\= x = 10.3$

The standard deviation is s = 3

From the question we are told the confidence level is 95% , hence the level of significance is

$\alpha = (100 - 95 ) \%$

=> $\alpha = 0.05$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{\sigma }{\sqrt{n} }$

=> $E = 1.96 * \frac{3}{\sqrt{26} }$

=> E = 1.1532

Generally 95% confidence interval is mathematically represented as

$\= x -E < \mu < \=x +E$

=> $10.3 -1.1532 < \mu < 10.3 + 1.1532$

=> $9.15< \mu < 11.45$

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Select the correct answer. Which rational expression is equivalent to this expression? 4 -3 I + 2 1 - 3 4. I + 2 OA OB. +372 oc+=+ OD. 1.2