Statistics and Probability Flashcard

Front

Determine an interval with 99% confidence for the number of people visiting an emergency room who were subsequently admitted to the hospital.

Back

12,254,344 to 12,271,599

Front

The symbol σ is used to represent the

Back

standard deviation of the population.

Front

We can use the normal distribution to make confidence interval estimates for the population proportion, p, when

Back

both np ≥ 5 and n(1 - p) ≥ 5.

Front

A simple random sample of size n from an infinite population of size N is to be selected. Each possible sample should have ______ of being selected.

Back

the same probability

Front

In the hypothesis testing procedure, α is the

Back

level of significance.

Front

The scale of measurement that is used to rank order the observation for a variable is called the _____ scale.

Back

ordinal

Front

For a two-tailed test using α = .0802, z = ?

Back

1.75.

Front

A probability distribution of all possible values of a sample statistic is known as

Back

a sampling distribution.

Front

A display used to compare the frequency, relative frequency or percent frequency of two categorical variables is a

Back

stacked bar chart.

Front

The major applications of data mining have been made by companies with a strong _______ focus.

Back

consumer