The population of Stark county this year is 7,921 people. Last year the population was 7,547 people. Find the approximate percen
tage rate of growth of the county. A. 9.5% growth B. 1.05% growth C. 5% growth C. 0.95% growth
1 answer:
Answer:
Option (C)
Step-by-step explanation:
To determine the population we use the formula,
Where = final population
= Initial population
r = percentage growth
Now we substitute these values in the formula,
r = 1.0496 - 1
r = 0.0496
r = 0.05
Therefore, percentage growth of the population of Stark county is 5%.
Option (C). will be the answer.
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Answer:
A. The larger the sample size the better.
Step-by-step explanation:
Central Limit Theorem
The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean and standard deviation
, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean
and standard deviation
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For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
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In this question:
We have to look at the standard error, which is:
This means that an increase in the sample size reduces the standard error, and thus, the larger the sample size the better, and the correct answer is given by option a.