Question

Samples of size n = 4000 are randomly selected from a population of homeowners in Florida. The square footage of the home is recorded and the mean is found for each sample. What is the distribution of the sample mean?

Answer 1

The answer is normal distribution.

Sampling distributions of means normally have normal distributions.

Answer 2

Answer:

Full Test Sampling Distributions Quiz Unit 8: Lesson 3 SCCA

Step-by-step explanation:

1. B. mean, variance, proportion

2. D. variance, mean, proportion

3. A. proportion

4. A. The sampling distribution of the variance requires repeating this process with the same sample several times. So this does not compare to the sampling distribution of the variance.

5. C. This is just one sample. The sampling distribution of the mean requires repeating this process with the same sample several times.

6. B. No, the sampling distribution of the proportion is the distribution of the proportions from all samples, not just one.

7. A. (question: you randomly survey 25 people at a time) Answer: not a normal distribution

8. A (question: samples of size n=20) Answer: normal distribution skewed to the right.

9. B. (question: sample of size n=4000) Answer: normal distribution.

10. C. (question: You roll a die 8 times) Answer: not a normal distribution.

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