# Behavioral Sciences STAT

Mathematics

## Quiz 6 :

Using Probability to Make Decisions About Data

Which of the following best describes knowing the relative frequency of every possible event in a population?

Multiple Choice

Answer:

When rolling a pair of fair dice, the probability of rolling a total point value of "7" is 0.17.If you rolled a pair of dice 1,000 times and the point value of "7" appeared 723 times, what would you probably conclude?

Multiple Choice

Answer:

Which of the following accurately describes a theoretical probability distribution?

Multiple Choice

Answer:

What do we call the portion of the sampling distribution in which values are considered too unlikely to have occurred by chance?

Multiple Choice

Answer:

Which of the following is correct regarding means falling within the region of rejection when the critical values are $\pm 1.96 ?$

Multiple Choice

Answer:

What can we conclude when the absolute value of a z-score for a sample mean is larger than the critical value?

Multiple Choice

Answer:

What can you conclude about a sample mean falling within the region of rejection?

Multiple Choice

Answer:

A study about the college aptitude of seniors at North City High School has resulted in a sample mean with a corresponding z-score of −2.00.If the critical value for the region of rejection is $\pm 1.96$ , what is the correct conclusion?

Multiple Choice

Answer:

Which of the following is not a step when deciding whether or not a population is being represented?

Multiple Choice

Answer:

A study about the college aptitude of seniors at South City High School has resulted in a sample mean with a corresponding z-score of +1.89.If the critical value for the region of rejection is $\pm 1.96$ , what is the correct conclusion?

Multiple Choice

Answer:

When +1.645 is used as the critical value instead of ±1.96 and the criterion probability is 0.05 in both cases,

Multiple Choice

Answer:

________tries to ensure that every member of a given population has an equal chance of inclusion in a given study.

Multiple Choice

Answer: