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3 years ago

Solve the Equation p - 15 = 30.

Mathematics

2 answers:

kkurt [141]3 years ago

7 0

P + 45. add 15 to both sides.

Alina [70]3 years ago

5 0

Answer:

Step-by-step explanation:

add 15 on both sides

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Which expression should you simplify to find the 90% confidence interval,

bogdanovich [222]

Answer:

$0.45 - 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.2870.45 + 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.613$

we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613

Step-by-step explanation:

The estimated proportion of interest is $\hat p=0.45$

We need to find a critical value for the confidence interval using the normla standard distributon. For this case we have 95% of confidence, then the significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ .

And the critical value is: $z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96$

The confidence interval for the true population proportion is interest is given by this formula:

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

Replacing the values provided we got:

$0.45 - 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.287\\\\0.45 + 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.613$

And we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613

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3 years ago

Give the following arithmetic sequence, determing the next three terms

shtirl [24]

Answer:

0.75,1,1.25

Step-by-step explanation:

increase in .25 every time.

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2 years ago

How to find the circumference of a cirlcle

Otrada [13]

$\sf{Circumference = 2\times\pi\times~r}$

Where r is the radius of the circle.

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3 years ago

You are to take a multiple-choice exam consisting of 100 questions with 5 possible responses to each question. Suppose that you

xeze [42]

Answer:

Step-by-step explanation:

This is a binomial distribution

n = 100; p = 1/5

E(x) = np = (100)(1/5) = 20

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2 years ago

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ohaa [14]

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