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arsen [322]
2 years ago
7

A regular decagon has 10 sides

Mathematics
2 answers:
AfilCa [17]2 years ago
8 0

Answer: 10

Step-by-step explanation:

alexgriva [62]2 years ago
5 0
10! You’re welcome :)
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Using the simple random sample of weights of women from a data​ set, we obtain these sample​ statistics: nequals45 and x overbar
Tomtit [17]

Answer: (141.1, 156.48)

Step-by-step explanation:

Given sample statistics : n=45

\overline{x}=148.79\text{ lb}

\sigma=31.37\text{ lb}

a) We know that the best point estimate of the population mean is the sample mean.

Therefore, the best point estimate of the mean weight of all women = \mu=148.79\text{ lb}

b) The confidence interval for the population mean is given by :-

\mu\ \pm E, where E is the margin of error.

Formula for Margin of error :-

z_{\alpha/2}\times\dfrac{\sigma}{\sqrt{n}}

Given : Significance level : \alpha=1-0.90=0.1

Critical value : z_{\alpha/2}=z_{0.05}=\pm1.645

Margin of error : E=1.645\times\dfrac{31.37}{\sqrt{45}}\approx 7.69

Now, the 90% confidence interval for the population mean will be :-

148.79\ \pm\ 7.69 =(148.79-7.69\ ,\ 148.79+7.69)=(141.1,\ 156.48)

Hence, the 90​% confidence interval estimate of the mean weight of all women= (141.1, 156.48)

3 0
3 years ago
What is the value of the expression? - 16+ 12 <br>A. -28 <br>B. -4 <br>C. 4<br>D. 28​
mixer [17]

Answer:

B.  -4

Step-by-step explanation:

-16 + 12 = -4

7 0
3 years ago
Como que c faz conta de raiz quadrada?
sineoko [7]

Answer:

could u say it in english and is it a multiple chice?

Step-by-step explanation:

7 0
3 years ago
A dice is thrown four times in a row. Find the probability of getting different result each throw.
MatroZZZ [7]

Answer:

the answer is b 1/4 its means got it 1 time same after throwing it 4 times

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
I need some one to help me with this
Ahat [919]

y = 6x  - 2
You can see that each time x increases by 1, y increases by 5. This means that the coefficient of x is 5 (if you graphed it, the slope would be 5). To find what value to add at the end, you can look at what y is when x equals 0. In this case, that is -2 (on a graph, -2 would be the y-intercept).
6 0
3 years ago
Read 2 more answers
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