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3 years ago

Which of the following is not a condition for constructing confidence intervals?

Mathematics

1 answer:

Andrew [12]3 years ago

4 0

You can use google or safari... then click the first link (Type in your question)

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Solve 14a-3b+9c=18 for a. Do not use a= in your answer

Lelu [443]

Answer:

9/7 + 3/14b - 9/14c

Step-by-step explanation:

See image below:)

8 0

2 years ago

A 95% confidence interval for a population mean is computed from a sample of size 400. Another 95% confidence interval will be c

Anna [14]

Answer:

The interval from the sample of size 400 will be approximately <u>One -half as wide</u> as the interval from the sample of size 100

Step-by-step explanation:

From the question we are told the confidence level is 95% , hence the level of significance is

$\alpha = (100 - 95 ) \%$

=> $\alpha = 0.05$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the 95% confidence interval is dependent on the value of the margin of error at a constant sample mean or sample proportion

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{\sigma}{\sqrt{n} }$

Here assume that $Z_{\frac{\alpha }{2} } \ and \ \sigma \$ is constant so

$E = \frac{k}{\sqrt{n} }$

=> $E \sqrt{n} = K$

=> $E_1 \sqrt{n}_1 = E_2 \sqrt{n}_2$

So let $n_1 = 400$ and $n_2 = 100$

=> $E_1 \sqrt{400} = E_2 \sqrt{100}$

=> $E_1 = \frac{\sqrt{100} }{\sqrt{400} } E_2$

=> $E_1 = \frac{1}{2 } E_2$

So From this we see that the confidence interval for a sample size of 400 will be half that with a sample size of 100

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2 years ago

A patient receives milligrams (m) of medication per dose. Her doctor orders her medication to be decreased by 25 milligrams. How

kolbaska11 [484]

A (milligrams) - 25 milligrams = C milligrams

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2 years ago

If you are calculating 15% off a discount you need to

katrin2010 [14]

You will need to subtract if u are taking 15% off

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2 years ago

What expression represents six times a number plus 8 times a number

zheka24 [161]

6n + 8n

Which is 6 * n + 6 * 8, n being a number.

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3 years ago