40 points [statistics] distributions of sample ranges, means, and medians.
1. samples of size n = 150 are randomly selected from the u. s. census data, and the income range is found for each sample. what is the distribution of the sample ranges?
skewed to the right
normal (approximately)
skewed to the left
not enough information provided
2. samples of size n = 60 are randomly selected from the population of numbers (0 through 9) produced by a random-number generator, and the mean is taken for each sample. what is the distribution of the sample means?
normal (approximately)
not enough information provided
skewed to the right
skewed to the left
3. samples of size n = 250 are randomly selected from the u. s. census data, and the median income is found for each sample. what is the distribution of the sample medians?
normal (approximately)
not enough information provided
skewed to the left
skewed to the right

The correct answer for this question is this one:

1. Samples of size n = 150 are randomly selected from the U.S. census data, and the income range is found for each sample. What is the distribution of the sample ranges?

skewed to the right
normal (approximately)
skewed to the left
not enough information provided

2. Samples of size n = 60 are randomly selected from the population of numbers (0 through 9) produced by a random-number generator, and the mean is taken for each sample. What is the distribution of the sample means?

normal (approximately)
not enough information provided
skewed to the right
skewed to the left

3. Samples of size n = 250 are randomly selected from the U.S. census data, and the median income is found for each sample. What is the distribution of the sample medians?

normal (approximately)
not enough information provided
skewed to the left
skewed to the right
Hope this helps answer your question and have a nice day ahead.