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3 years ago

N stands for a whole number 2n is greater than 30, so what does n stand for

Mathematics

1 answer:

Arte-miy333 [17]3 years ago

4 0

N would = 20, because 2x20=40 which is greater than 30

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115 - 12

adell [148]

Answer:

Step-by-step explanation:

|15-12|/4 = 3/4

|(-21+9)/8| = |-12/8| = 12/8 = 3/2 (Simply)

3/4 - 3/2 = -3/4

So the answer is B.

7 0

3 years ago

No cut a key lime pie into 8 equal size slices. the next day 7/8 of the pie is left. No put each slice on its own PLATE. How man

Butoxors [25]

She needs 7 plates because there are 7 pieces left.

7 0

4 years ago

If the mean of a symmetric distribution is 130 ,what is the median?

Kruka [31]

Hello.

The answer is 130.

130 is the only number so that has to be the mean.

This is beacsue <span> symmetric is the same as the mean.

Have a nice day</span>

6 0

3 years ago

Suppose an article reported that 14% of unmarried couples in the United States are mixed racially or ethnically. Consider the po

Anvisha [2.4K]

Answer: $\mu_{\hat{p}}=0.14$ and $\sigma_{\hat{p}}=0.0347$

Step-by-step explanation:

In sampling distribution of $\hat{p}$ .

The mean and standard deviation of the sampling distribution of p is given by :-

$\mu_{\hat{p}}=p$

$\sigma_{\hat{p}}=\sqrt{\dfrac{p(1-p)}{n}}$ , where p= population proportion and n= sample size.

Let p be the population proportion of unmarried couples in the United States are mixed racially or ethnically.

As per given , we have

n = 100

p= 14% =0.14

Then, the mean and standard deviation of the sampling distribution of p will be :

$\mu_{\hat{p}}=0.14$

$\sigma_{\hat{p}}=\sqrt{\dfrac{0.14(1-0.14)}{100}}$

$\sigma_{\hat{p}}=\sqrt{\dfrac{0.14(0.86)}{100}}$

$\sigma_{\hat{p}}=\sqrt{\dfrac{0.1204}{100}}$

$\sigma_{\hat{p}}=\sqrt{0.001204}$

$\sigma_{\hat{p}}=0.0346987031458\approx0.0347$

Hence, the required answer : $\mu_{\hat{p}}=0.14$ and $\sigma_{\hat{p}}=0.0347$

8 0

3 years ago

Karen purchased the DVD

9966 [12]

Answer:

Percent markdown = 14%

Step-by-step explanation:

Given:

Original price of DVD player = $175.90

Markdown price of DVD player =$153.77

To find percent markdown.

Amount of mark down $=\textrm{Original price - Markdown price}=\$175.90-\$153.77=\$22.13$

Percent markdown $=\frac{Amount\ of\ markdown}{Markdown\ price}\times100=\frac{22.13}{153.77}\times 100=14.39\%\approx 14\%$

4 0

3 years ago