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Rama09 [41]
3 years ago
9

3rd question of the day. It's 59th and the LASt question PLEASE help I'll give brainly thing

Mathematics
1 answer:
forsale [732]3 years ago
6 0

Answer:

Step-by-step explanation:

Area of the specified region = Area of larger circle - Area of smaller circle

Larger circle:

r = 16 + 3 = 19 m

Area = πr²

       =π * 19 * 19

       = 361π m²

Smaller circle:

r = 16 m

Area = πr²

       =π * 16 * 16

       = 256π m²

Area of the specified region = 361π - 256π = 105π m²

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A survey in Men’s Health magazine reported that 39% of cardiologists said that they took vitamin E supplements. To see if this i
zzz [600]

Answer:

z=\frac{0.36 -0.39}{\sqrt{\frac{0.39(1-0.39)}{100}}}=-0.615  

The p value for this case would be:

p_v =2*P(z  

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true proportion is not different from 0.39

Step-by-step explanation:

Information given

n=100 represent the random sample taken

X=36 represent the number of people that take E supplement

\hat p=\frac{36}{100}=0.36 estimated proportion of people who take R supplement

p_o=0.39 is the value that we want to test

\alpha=0.05 represent the significance level

z would represent the statistic

p_v represent the p value

Hypothesis to test

We want to test if the true proportion is equatl to 0.39 or not, the system of hypothesis are.:  

Null hypothesis:p=0.39  

Alternative hypothesis:p \neq 0.39  

The statistic is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Replacing the info we got:

z=\frac{0.36 -0.39}{\sqrt{\frac{0.39(1-0.39)}{100}}}=-0.615  

The p value for this case would be:

p_v =2*P(z  

For this case since the p value is higher than the significance level we have enough evidence to FAIL to reject the null hypothesis and we can conclude that the true proportion is not different from 0.39

8 0
2 years ago
I need details on how to solve this problem please
Radda [10]

I hope I answer your question

7 0
3 years ago
Read 2 more answers
24% of what number is 72
nignag [31]

Answer:

300

Step-by-step explanation:

24% × x = 72

or,   24 /100

× x = 72

we have x = 72 ×  100 /24

x = 300

Hope it helps

4 0
3 years ago
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Vesnalui [34]
(2x-1)×4=8x-4
I hope it helps ;)
5 0
3 years ago
Expand and simplify<br> (2x2 + 3)(4x + 5) - 8x(x - 2)
Bezzdna [24]
I think the answer is 2x+12
4 0
3 years ago
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