Review Flashcardizz Unit 5 Part 1

Front

What is the probability that at most 16% of children live in households with less than the official poverty level if 22% of American children under six live in poverty?

Back

0.0019

Front

What is the difference between a population and a sample in statistics?

Back

A population includes all members of a specified group, while a sample is a subset of the population used to represent the group.

Front

What is a parameter in statistics?

Back

A parameter is a numerical value that summarizes a characteristic of a population.

Front

What is a statistic in statistics?

Back

A statistic is a numerical value that summarizes a characteristic of a sample.

Front

What is the mean length of stay in hospitals in a particular region?

Back

5.5 days

Front

What is the standard deviation of the length of stay in hospitals in a particular region?

Back

2.6 days

Front

What is the shape of the distribution of hospital stays in the given region?

Back

Strongly skewed to the right.

Front

What happens to the shape of the sampling distribution as sample size increases?

Back

It becomes approximately normal due to the Central Limit Theorem.

Front

What is the mean of the sampling distribution if the population mean is 5.5 days?

Back

5.5 days.

Front

What is the standard deviation of the sampling distribution if the population standard deviation is 2.6 days and the sample size is 100?

Back

0.26 days.