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3 years ago

Simplify 7x/x-4(-2)

Mathematics

1 answer:

igomit [66]3 years ago

5 0

Answer:

Step-by-step explanation:

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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:

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

Given:

$\hat p = 0.16\\MOE= 0.02\\Confidence\ level =0.90$

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

$z_{\alpha /2}=z_{0.10/2}=z_{0.05}=1.645$ *Use a standard normal table.

Compute the sample size required as follows:

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

Thus, the sample size required is 910.

5 0

3 years ago

Michael is paid $9 per hour to work at the movie theater and $7 per hour when he helps his aunt at her bakery. Michael cannot wo

Murljashka [212]

If he works 32 hrs at the movie theater = $288 > $251

4 0

3 years ago

Read 2 more answers

WILL GIVE BRAINLIEST

Elenna [48]

Answer:

C is correct

Step-by-step explanation:

do you know why? haha

5 0

3 years ago

Multiply.

Elis [28]

Hey there!

$Answer:\boxed{\text{C.}108.73608}$

$Explanation:$

$31.246*3.48$

Multiply to solve.

$\boxed{\text{C.}108.73608}\text{ is your answer.}$

Hope this helps!

$\text{-TestedHyperr}$

4 0

3 years ago

Rewrite the fraction with the denominator of 33 6/11=/33

Sonja [21]

You would time the denominator by 3 so 11*3 would be 33 then times the numerator by the same so 6*3 soot would be 18/33

7 0

3 years ago

Simplify 7x/x-4(-2)​

Simplify 7x/x-4(-2)