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3 years ago

Please help me

Mathematics

2 answers:

Evgen [1.6K]3 years ago

4 0

add the sum together to get your answer

Step-by-step explanation:

MA_775_DIABLO [31]3 years ago

3 0

Answer:

1. 11255

2. 13:44

3. 14 and 10

4. 213 and 497

5. AC=AB×BC

BD=BC×CD

But I am not able to find A:B:C:D.

I am not doing the whole thing that's way too much

Step-by-step explanation:

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Answer:

$113.7-2.154\frac{9.1}{\sqrt{29}}=110.06$

$113.7+2.154\frac{9.1}{\sqrt{29}}=117.34$

And the 96% confidence is given by (110.06; 117.34)

Step-by-step explanation:

Information given

$\bar X=113.7$ represent the sample mean

$\mu$ population mean (variable of interest)

s=9.1 represent the sample standard deviation

n=29 represent the sample size

Confidence interval

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

The degrees of freedom are given by:

$df=n-1=29-1=28$

The Confidence is 0.96 or 96%, the significance is $\alpha=0.04$ and $\alpha/2 =0.02$ , and the critical value would be $t_{\alpha/2}=2.154$

Replacing the info we got:

$113.7-2.154\frac{9.1}{\sqrt{29}}=110.06$

$113.7+2.154\frac{9.1}{\sqrt{29}}=117.34$

And the 96% confidence is given by (110.06; 117.34)

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