SOC 390 Concept Quiz The One-Sample t-Test

Question 1

1 / 1 pts

For the one-sample t-test, the population’s standard deviation is ______.

not known

equal to one

exact

known

Question 2

1 / 1 pts

The alpha level of a one-sample t-test is determined by:

the data

the specific statistical test

the researcher

the number of participants

Question 3

1 / 1 pts

The goal of the one-sample t-test is to:

compare the mean of a sample to the population mean.

describe the location of a score within a distribution

compare the means of two samples.

compare the standard deviation of a sample to the standard deviation of the population.

Question 4

1 / 1 pts

The one-sample t-test accounts for bias resulting from sample size in the calculation of the standard error of the mean by:

dividing by the population standard deviation

incorporating the difference between the sample mean and population mean

incorporating the sample standard deviation

dividing by the square root of the sample size minus one.

Question 5

1 / 1 pts

The null and alternative hypotheses of the one-sample t-test are the same as the one-sample z-test.

True

False

Question 6

1 / 1 pts

The shape of the t-distribution used to find the critical t-value is influenced by:

the number of sample means being examined

the alpha of the test

the population standard deviation

the size of the sample

Question 7

1 / 1 pts

Which formula accurately represents the degrees of freedom for the one-sample t-test?

df = n+1

df = X - u

df = n1 + n2 -2

df = n-1

Question 8

1 / 1 pts

Nate is conducting a one-sample t-test and has determined that his test should be two-tailed. Which of the following is TRUE regarding the critical value for the test?

The critical value should be determined after calculating the obtained test statistic, to make sure that you can reject the null hypothesis.

There will be one critical value for this test. It will either be positive or negative depending on whether the sample is thought to have a higher or lower mean than the population.

A two-tailed test cannot be conducted with one sample.

There will be two critical values for this test, one positive and one negative.

Question 9

1 / 1 pts

Compared to the one-sample z-test, the one-sample t-test incorporates more information about the population.

True

False

Question 10

1 / 1 pts

In a two-tailed test, the obtained test statistic can be negative and still result in rejecting the null hypothesis.

True

False

Quiz Score: 10 out of 10