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3 years ago

In circle y what is mtu

Mathematics

1 answer:

DanielleElmas [232]3 years ago

5 0

Answer:

pp1 = $\sqrt{x} \sqrt{x} 131$

Step-by-step explanation:

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Consider the paragraph proof. Given: D is the midpoint of AB, and E is the midpoint of AC. Prove:DE = BC It is given that D is t

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It is not D and d was 4a^2

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3 years ago

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Are 6(3x+1) and 9X +6+ 9X Equivalent

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Answer:

yes, it is equivalent!!

Step-by-step explanation:

6(3x + 1) = 18x + 6

9x + 6 + 9x combined will also equal 18x + 6

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3 years ago

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Helen spends 12% of her budget on transpiration expenses. Write this percent as a fraction and decimal and explain how.

34kurt

Answer:

12/ 100 ,0.12

Step-by-step explanation:

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3 years ago

Which sign makes the statement true? |6|? -8 greater than less than or equal to?

kicyunya [14]

Answer:

|6| > -8

Step-by-step explanation:

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3 years ago

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TV advertising agencies face increasing challenges in reaching audience members because viewing TV programs via digital streamin

choli [55]

Answer:

a) The 99% confidence interval would be given (0.523;0.577).

We are 99% confident that this interval contains the true population proportion.

b) $n=\frac{0.55(1-0.55)}{(\frac{0.03}{2.58})^2}=1830.51$

And rounded up we have that n=1831

Step-by-step explanation:

Data given and notation

n=2341 represent the random sample taken

X represent the people that they have watched digitally streamed TV programming on some type of device

$\hat p=0.55$ estimated proportion of people that they have watched digitally streamed TV programming on some type of device

$\alpha=0.01$ represent the significance level

Confidence =0.99 or 99%

z would represent the statistic for the confidence interval

p= population proportion of people that they have watched digitally streamed TV programming on some type of device

The population proportion present the following distribution:

$p \sim N (p, \sqrt{\frac{p(1-p)}{n}}$

Part a) Confidence interval

The confidence interval would be given by this formula

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

For the 99% confidence interval the value of $\alpha=1-0.99=0.01$ and $\alpha/2=0.005$ , with that value we can find the quantile required for the interval in the normal standard distribution.

$z_{\alpha/2}=2.58$

And replacing into the confidence interval formula we got:

$0.55 - 2.58 \sqrt{\frac{0.55(1-0.55)}{2341}}=0.523$

$0.55 + 2.58 \sqrt{\frac{0.55(1-0.55)}{2341}}=0.577$

And the 99% confidence interval would be given (0.523;0.577).

We are 99% confident that this interval contains the true population proportion.

Part b) What sample size would be required for the width of a 99% CI to be at most 0.03 irrespective of the value of p??

The margin of error for the proportion interval is given by this formula:

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

And on this case we have that $ME =\pm 0.03$ and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}$ (b)

And replacing into equation (b) the values from part a we got:

$n=\frac{0.55(1-0.55)}{(\frac{0.03}{2.58})^2}=1830.51$

And rounded up we have that n=1831

8 0

4 years ago