Question

1. The pre-specified value set by the researcher to establish whether a test will be significant is known as: a. What is the standard level that permits us to reject the null hypothesis? 2. The actual significance level we obtain that's associated with our test statistic is known as: 3. The one sample case (zvs. t): When population parameters, i.e. population mean and standard deviation, are known should be used. When the population mean and standard deviation are unknown test should be used. 4. Let's say you want to know if the mean earnings of Latinx individuals are different from the national mean of $27,041 (we do not know the population standard deviation). We have a sample of Latinx individuals (n=500) and their mean earnings were $23,500, with a standard deviation of $17,022. a. What is the research hypothesis? b. After running the analysis in SPSS, we end up with: t = -4.670, p=.000. Does this test indicate that there is a significant difference (meaning we are able to reject the null) between the Latinx population and the whole population with respect to earnings? YES or NO c. Report the results of the test in the form of a step 5 statement: We [reject]/[fail to reject] the null hypothesis, and state that there [is]/[is not] a statistically significant difference in population's earnings. compared to the full 5. As mentioned in the text, sociologists are often interested in comparing two groups. As an example, we might want to compare males versus females on hours (per week) spent online. a. What type of test would you use to test this relationship? i. Dependent variable & level of measurement: ii. Independent variable & level of measurement: iii. Statistical test:

1. The pre-specified value set by the researcher to establish whether a test will be
significant is known as:
a. What is the standard level that permits us to reject the null hypothesis?
2. The actual significance level we obtain that's associated with our test statistic is known
as:
3. The one sample case (zvs. t): When population parameters, i.e. population mean and
standard deviation, are known should be used. When the population mean and
standard deviation are unknown test should be used.
4. Let's say you want to know if the mean earnings of Latinx individuals are different from
the national mean of $27,041 (we do not know the population standard deviation). We
have a sample of Latinx individuals (n=500) and their mean earnings were $23,500, with
a standard deviation of $17,022.
a. What is the research hypothesis?
b. After running the analysis in SPSS, we end up with: t = -4.670, p=.000. Does this
test indicate that there is a significant difference (meaning we are able to reject
the null) between the Latinx population and the whole population with respect
to earnings? YES or NO
c. Report the results of the test in the form of a step 5 statement:
We [reject]/[fail to reject] the null hypothesis, and state that there [is]/[is not] a
statistically significant difference in
population's earnings.
compared to the full
5. As mentioned in the text, sociologists are often interested in comparing two groups. As
an example, we might want to compare males versus females on hours (per week) spent
online.
a. What type of test would you use to test this relationship?
i. Dependent variable & level of measurement:
ii. Independent variable & level of measurement:
iii. Statistical test:

Added by Chris R.

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