2 years ago

PLEASE HELP MEEEEEE :(((

Mathematics

1 answer:

attashe74 [19]2 years ago

5 0

Answer:

tbh i would say 1/8 in exact form

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Find the minimum sample size when we want to construct a 90% confidence interval on the population proportion for the support of

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N = 73
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3 years ago

Suppose the population standard deviation is σ = 5 , an SRS of n = 100 is obtained, and the confidence level is chosen to be 98%

beks73 [17]

Answer:

1.165.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.98}{2} = 0.01$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.01 = 0.99$ , so $z = 2.33$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

In this problem, we have that:

$\sigma = 5, n = 100$ . So

$M = z*\frac{\sigma}{\sqrt{n}}$

$M = 2.33*\frac{5}{\sqrt{100}} = 1.165$

So the correct answer is:

1.165.

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3 years ago

Is the square root of 33 irrational?

maks197457 [2]

I’m gonna say no since it’s 5.74 and it isn’t repeating

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3 years ago

Does this graph represent a function? Why or why not?

In-s [12.5K]

B. No, because it fails the vertical line test.

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2 years ago

Pl help it’s for a grade I will give you Brainly if right

rodikova [14]

Answer:

Step-by-step explanation:

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2 years ago

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