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2 years ago

How many fives in 308

Mathematics

2 answers:

UNO [17]2 years ago

8 0

First divide 308 by 5 then you get 61.6 so 61 5s go into 308

zzz [600]2 years ago

7 0

To see how many times 5 goes into 308, we can divide.

308/5

We divide 308 by 5 because we want to split up 308 into 5 groups :).

308/5=61.6

If you didn't work with decimals yet, just focus on the 61. 5 goes into 308... 61 times, with 3 left over (5*61 is 305 and 308-305 is 3).

So, the answer is 61 with a remainder of 3, or 61.6.

Hope I helped! :)

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Answer:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

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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Answer:

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