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levacccp [35]
2 years ago
5

50% of what number is 32?

Mathematics
2 answers:
andriy [413]2 years ago
6 0
So you know 50% means half right? So then do 32*2 and you get 64.
Vadim26 [7]2 years ago
4 0
50% is the same as 1/2. So if 1/2 of a number is 32, then 64 is the number you're looking for.
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The estimate of the population proportion should be within plus or minus 0.02, with a 90% level of confidence. The best estimate
Rudiy27

Answer:

The sample size required is 910.

Step-by-step explanation:

The confidence interval for population proportion is:

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

The margin of error is:

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The critical value of <em>z</em> for 90% confidence level is:

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Compute the sample size required as follows:

MOE=z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }\\0.02=1.645\times \sqrt{\frac{0.16(1-0.16)}{n} }\\n=\frac{(1.645)^{2}\times 0.16\times (1-0.16)}{(0.02)^{2}} \\=909.2244\\\approx910

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3 years ago
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