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Xelga [282]
3 years ago
11

He how do you do this

Mathematics
1 answer:
OlgaM077 [116]3 years ago
4 0

Answer:

I'm not sure. have you tried googling? Also where is comments on this site I'm kinda new

Step-by-step explanation:

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(8.1 x 10-3). (3 x 109)
mihalych1998 [28]
your answer for this is 18,540.9
3 0
4 years ago
A church group is interested in estimating the true proportion of Americans who attend weekly religious services. How large a sa
artcher [175]

Answer:

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

We can use an estimatior for the population proportion as \hat p=0.5 since we don't know previous info. And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11  

And rounded up we have that n=1068

Step-by-step explanation:

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since the confidence level is 99%, our significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.005. And the critical value would be given by:

z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}    (a)  

And on this case we have that ME =\pm 0.03 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

We can use an estimatior for the population proportion as \hat p=0.5 since we don't know previous info. And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11  

And rounded up we have that n=1068

8 0
3 years ago
Please help right away
avanturin [10]

Answer:

D) 5985

Step-by-step explanation:

Total area: 150×100 = 15000

Area for stars: 6×6 = 36

Total area - area for stars = area for fans

15000-36= 14964

14964ft² for fans, each takes up 2.5 ft²

14964 ÷2.5 = 5985.6 fans

Since we can't have 0.6 of a person, we round down to 5985 fans

5 0
3 years ago
Read 2 more answers
Solve: -3x + 12 = -18
creativ13 [48]

Answer:

x=2

Step-by-step explanation:

-3x+12=-18

-3x=-18+12

-3x=-6

x=-6/-3

x=2

7 0
4 years ago
Read 2 more answers
Product A is an 8oz bottle of cough medication that sells for $1.36. Product B is a 16-oz. bottle of cough medication that costs
kolezko [41]

Answer:

8 oz bottle

Step-by-step explanation:

1.36/8 = .17

3.20/16 = .20

7 0
3 years ago
Read 2 more answers
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