SOC 353: Sociological Research: Analysis

Exam #2 Extra Credit

Due Date: 12 p.m. on November 12, 2019 (via Canvas)

Directions: Answer the following questions. Please show all of your work. If your exam #2 grade

was an 85 or below, then each of the two questions is worth 7.5 points (for a total of 15 points). If

your exam #2 grade was an 86 or above, then each question is worth (100 – G2)/2 points, where

G2 is your original exam #2 grade. The answer to each sub-question should be 1 to 3 complete

sentences in length.

1.) A researcher is interested in studying whether income levels vary between people who

attended four-year for-profit colleges versus two-year public colleges. Using the 2014

wave of the General Social Survey (GSS), they ask the following question: “Do U.S. adults

who attended a four-year for-profit college go on to make a different amount of money

than U.S. adults who attended a two-year public college?” The dependent variable is the

respondent’s current yearly income in U.S. dollars. The independent variable is a

dichotomous variable that indicates whether the respondent attended a four-year for-profit

college or a two-year public college. In total, 19 of the sampled U.S. adults attended a fouryear

for-profit college and 70 attended a two-year public college.

The mean income for people who attended a four-year for-profit college is $18,677.28 with

a standard deviation of $2, XXXXXXXXXXThe mean income for people who attended a two-year

public college is $19,249.41 with a standard deviation of $1, XXXXXXXXXXUsing an a = .01, does

the researcher have enough evidence to conclude that, in the U.S. adult population, income

levels likely vary depending on whether someone attended a four-year for-profit college or

a two-year public college? Explain. Be sure to follow the “five step” system for hypothesis

testing outlined in class and in the textbook.

2.) Below are some descriptive statistics for a variable in the 2014 GSS called “tvhours.” The

variable indicates the average number of hours per day the respondent spends watching

TV. Calculate a 99.9% confidence interval around the mean and interpret it.

Variable | Obs Mean Std. Dev. Min Max

-------------+---------------------------------------------------------

tvhours | 1, XXXXXXXXXX XXXXXXXXXX

Exam #2 Extra Credit

Due Date: 12 p.m. on November 12, 2019 (via Canvas)

Directions: Answer the following questions. Please show all of your work. If your exam #2 grade

was an 85 or below, then each of the two questions is worth 7.5 points (for a total of 15 points). If

your exam #2 grade was an 86 or above, then each question is worth (100 – G2)/2 points, where

G2 is your original exam #2 grade. The answer to each sub-question should be 1 to 3 complete

sentences in length.

1.) A researcher is interested in studying whether income levels vary between people who

attended four-year for-profit colleges versus two-year public colleges. Using the 2014

wave of the General Social Survey (GSS), they ask the following question: “Do U.S. adults

who attended a four-year for-profit college go on to make a different amount of money

than U.S. adults who attended a two-year public college?” The dependent variable is the

respondent’s current yearly income in U.S. dollars. The independent variable is a

dichotomous variable that indicates whether the respondent attended a four-year for-profit

college or a two-year public college. In total, 19 of the sampled U.S. adults attended a fouryear

for-profit college and 70 attended a two-year public college.

The mean income for people who attended a four-year for-profit college is $18,677.28 with

a standard deviation of $2, XXXXXXXXXXThe mean income for people who attended a two-year

public college is $19,249.41 with a standard deviation of $1, XXXXXXXXXXUsing an a = .01, does

the researcher have enough evidence to conclude that, in the U.S. adult population, income

levels likely vary depending on whether someone attended a four-year for-profit college or

a two-year public college? Explain. Be sure to follow the “five step” system for hypothesis

testing outlined in class and in the textbook.

2.) Below are some descriptive statistics for a variable in the 2014 GSS called “tvhours.” The

variable indicates the average number of hours per day the respondent spends watching

TV. Calculate a 99.9% confidence interval around the mean and interpret it.

Variable | Obs Mean Std. Dev. Min Max

-------------+---------------------------------------------------------

tvhours | 1, XXXXXXXXXX XXXXXXXXXX

Answered Same DayNov 06, 2021

Q1)

Step 1:

Null hypothesis, ho: there is no significant difference in the mean income level between adults attended a four-year for-profit college or a two-year public college.

Alternative hypothesis, h1: there is a significant difference in the mean income level between adults attended a four-year for-profit college or a two-year public college.

Step 2:

Alpha = 1%

Step 3:

sample...

Step 1:

Null hypothesis, ho: there is no significant difference in the mean income level between adults attended a four-year for-profit college or a two-year public college.

Alternative hypothesis, h1: there is a significant difference in the mean income level between adults attended a four-year for-profit college or a two-year public college.

Step 2:

Alpha = 1%

Step 3:

sample...

SOLUTION.PDF## Answer To This Question Is Available To Download

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