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1 year ago

Which of the following is an accurate statement about sample size

1 answer:

4 0

The option that is an accurate statement about Sample Size is; A: A larger sample size is needed for increased accuracy.

<h3>What is true about Sample Size?</h3>

Sample size determination is the act of choosing the number of observations or replicates to include in a statistical sample. The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample.

Now, the smaller the sample size, the lesser the accuracy as you have possibility of biased research from just a handful of people. However, the larger the sample, the greater the degree of accuracy of the research.

Thus, we can say that the option that is an accurate statement about Sample Size is; A: A larger sample size is needed for increased accuracy.

Complete question is;

Which of the following is an accurate statement about sample size?

Select one:

a. A larger sample size is needed for increased accuracy.

b. A smaller sample size will reduce the size of the confidence interval.

c. Sample size is a constant percentage of the population size.

d. Sample size is independent of the confidence interval.

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Soon Yi loves to bake, and she is making flaky pastry. Soon Yi starts with a layer of dough 222 millimeters (\text{mm})(mm)left

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Answer:

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Explanation:

When the dough is folded, it increases by a constant factor. We can model the growth of the thickness using the exponential growth model

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Growth factor, r =8%=0.08

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$2(1+0.08)^n\geq 2.5\\2(1.08)^n\geq 2.5\\$Divide both sides by 2$\\\dfrac{2(1.08)^n}{2}\geq \dfrac{2.5}{2}\\\\1.08^n\geq 1.25\\\\$Change to logarithm form\\n \geq \log_{1.08}1.25\\\\n\geq \dfrac{\log 1.25}{\log 1.08} \\\\n\geq 2.9$

Therefore, the smallest number of times Soon Yi will have to roll and fold the dough so that the resulting dough is at least 2.5mm thick is 3.

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