Exam 8: Hypothesis Testing: Inferences About a Single Mean

Traditionally,_____ is the probability associated with alpha.

Assume that you are comparing a sample value to a population value of 75.The non-directional alternative hypothesis would be stated as ____________________.

A one-sample t test is used in situations where

The p value reported in APA manuscripts is commonly referred to as _____.

The one-sample t-test is robust to violations against which of the following assumptions?

The _____ the sample size,the _____ the statistical test will be,everything else being equal.

When the sample size is less than 40,the z and the t distributions are almost identical.

A researcher in sports psychology is interested in the resting pulse rate of long-distance college runners.She does some research and finds data from the U.S.Olympics team showing their long-distance runners have a resting pulse rate of 60 beats per minute.She wants to know if the pulse rate for college runners is different from the Olympic team's m of 60.She randomly samples 20 long-distance runners,and finds What is the estimated standard error of the mean?

A group of 200 students takes the Kaplan course in hopes that it will improve their SAT scores above the national mean of 500 on the math section.The population standard deviation of the SAT is known to be 100.Use an alpha level of .05 when answering the following questions.What conclusions can be made,based on this test statistic?

Increasing alpha can increase power,however the trade-off is that ____________________.is also increased.

What is the null hypothesis?

Which of the following accurately defines a Type II error?

The set of all standard scores more extreme than the critical values is called a rejection region and constitutes an unexpected result.

Distinguish between directional and nondirectional tests.

Which of the following describes a typical null hypothesis?

When we say that a test is _____ to violations of a distributional assumption,we mean that the frequency of Type I and Type II errors,and,thus,the accuracy of our conclusions,are relatively unaffected as compared to when the assumption is met.

A researcher in sports psychology is interested in the resting pulse rate of long-distance college runners.She does some research and finds data from the U.S.Olympics team showing their long-distance runners have a resting pulse rate of 60 beats per minute.She wants to know if the pulse rate for college runners is different from the Olympic team's m of 60.She randomly samples 20 long-distance runners,and finds Using a nondirectional test with a = .05,what are your critical values?

When the alpha level is .05,a result is defined as being "unexpected" if the probability of obtaining that result,assuming the null hypothesis is true,is:

If you fail to reject the H₀ when H₀ is false then you made a _____ with a probability equal to ______.

The alpha level reflects the probability of making a Type II error.