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3 years ago

13

This isnt a school related question,

1 answer:

Murrr4er [49]3 years ago

3 0

Answer:

yes because he killed a inconnent man because he was black and not just him trevor martine dante wright breonna taylor and so many more they all died because they were black not all black ppl are bad and black ppl arent tho only ones who does crimes mexican,white,asain,chinese,etc but the dont die but black ppl do for what reason and honesly blm was a trend no one even cares about it anymore and its sad for me to say that coming from a black person we get killed bc of our color and no one cares anymore blm is there but its hard to make a diffrence with ppl like this in the world and he should be in jail for atleat 2 years

Step-by-step explanation:

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When the sample size and the sample proportion remain the same, a 90 percent confidence interval for a population proportion p w

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Answer:

A 90% confidence interval for <em>p</em> will be <u>narrower </u>than the 99% confidence interval.

Step-by-step explanation:

The formula to compute the (1 - <em>α</em>) % confidence interval for a population proportion is:

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

Here $\hat p$ is the sample proportion.

The margin of error of the confidence interval is:

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

The MOE is dependent on:

Confidence level
Standard deviation
Sample size

The MOE is directly related to the confidence level and standard deviation.

So if any of the two increases then the MOE also increases, thus widening the confidence interval.

And the MOE is inversely related to the sample size.

So if the sample increases the MOE decreases and vice versa.

It is provided that the sample size and the sample proportion are not altered.

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

$z_{\alpha/2}= z_{0.10/2}=z_{0.05}=1.645$

And the critical value of <em>z</em> for 99% confidence level is:

$z_{\alpha/2}= z_{0.05/2}=z_{0.05}=1.96$

So as the confidence level increases the critical value increases.

Thus, a 90% confidence interval for <em>p</em> will be narrower than the 99% confidence interval.

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