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2 years ago

A sample has a sample proportion of 0.3. which sample size will produce the

1 answer:

7 0

The sample size of 36 will produce the widest 95% confidence interval when estimating the population parameter option (b) is correct.

<h3>What are population and sample?</h3>

It is described as a collection of data with the same entity that is linked to a problem. The sample is a subset of the population, yet it is still a part of it.

We have:

A sample has a sample proportion of 0.3.

Level of confidence = 95%

At the same confidence level, the larger the sample size, the narrower the confidence interval.

As we have a 95% confidence interval the sample size should be lower.

The sample size from the option = 36 (lower value)

Thus, the sample size of 36 will produce the widest 95% confidence interval when estimating the population parameter option (b) is correct.

Learn more about the population and sample here:

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The Simple interest will be "$400".

Given values are:

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As we know,

→ $Simple \ interest (SI) = \frac{P\times R\times T}{100}$

By substituting the values, we get

→ $=\frac{500\times 10\times 8}{100}$

→ $=5\times 10\times 8$

→ $= 400$ ($)

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