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77julia77 [94]
3 years ago
12

Use the given data to find the minimum sample size required to estimate a population proportion or percentage. Margin of​ error:

nine percentage​ points; confidence level 95​%; from a prior​ study, p with caret is estimated by the decimal equivalent of 38​%.
Mathematics
1 answer:
Yakvenalex [24]3 years ago
6 0

Answer: 112

Step-by-step explanation:

Given : Significance level : \alpha=1-0.95=0.05

Critical value: z_{\alpha/2}=1.96

Margin of error : E = 9%=0.09

The estimated proportion of caret : p =0.38

Now, the formula to find the sample size :-

n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2

i.e. n=(0.38)(1-0.38)(\dfrac{1.96}{0.09})^2

=111.738390123\approx112

Hence, the required minimum sample size = 112

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Sonbull [250]

Answer:

24 people

Step-by-step explanation:

((The numbers are up there, so I am not going to define each variable.))

For starters, there is no overlap between the double facilities groups, except the triple facility users, so:

19 + 9 + 16 - 4 = 40 people

Since there is overlap between single and double groups, you will need to subtract, so:

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Total for 1 facility: 38 + 31 + 6 - 4 = 71 people

((Minus 4 because the 4 triple facility users overlap the double facility users (problem is in layers: layer 1 minus layer 2, then minus layer 3).))

Next, add the totals:

71 + 40 = 111 people (using facilities)

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(((I'm not 100% sure on this answer, so if someone could check my work, that would be much appreciated.)))

4 0
3 years ago
In the typing world,80 words per minute is considered acceptable.how many words per 30 minutes is this
lukranit [14]
W = words per minute = 80
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8 0
3 years ago
The perimeter of a room is 43 ft. The width is 9 1 2ft. What is the length?
andreev551 [17]

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Answer:

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Step-by-step explanation:

Q(-3,-2)

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iogann1982 [59]

slope m = - 2 → B

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m =

3 0
3 years ago
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