# STAT200 UMUC 2016 Households & Annual Expenditures Inferential Statistics Analysis Hello I need assistance with my Assignment #3: Inferential Statistics An

STAT200 UMUC 2016 Households & Annual Expenditures Inferential Statistics Analysis Hello I need assistance with my Assignment #3: Inferential Statistics Analysis and Writeup I have attached the instructions and template I also attached the data set that’s being used for all of our past assignments.The UniqueID# that I used for my last two assignmeents was number 2 Assignment #3: Inferential Statistics Analysis and Writeup
Identifying Information
Student (Full Name):
Class:
Instructor:
Date:
Part A: Inferential Statistics Data Analysis Plan and Computation
Introduction:
Variables Selected:
Table 1: Variables Selected for Analysis
Variable Name in the Data Set
Variable Type
Variable 1:
Socioeconomic
Variable 2:
Expenditure
Variable 3:
Expenditure
Description
Qualitative or Quantitative
Data Analysis:
1. Confidence Interval Analysis: For one expenditure variable, select and run the appropriate method
for estimating a parameter, based on a statistic (i.e., confidence interval method) and complete the
following table (Note: Format follows Kozak outline):
Table 2: Confidence Interval Information and Results
Name of Variable:
State the Random Variable and Parameter in Words:
Confidence interval method including confidence level and rationale for using it:
State and check the assumptions for confidence interval:
STAT200: Assignment #3 – Inferential Statistics Analysis and Writeup
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Method Used to Analyze Data:
Find the sample statistic and the confidence interval:
Statistical Interpretation:
2. Hypothesis Testing: Using the second expenditure variable (with socioeconomic variable as the
grouping variable for making two groups), select and run the appropriate method for making decisions
about two parameters relative to observed statistics (i.e., two sample hypothesis testing method) and
complete the following table (Note: Format follows Kozak outline):
Table 3: Two Sample Hypothesis Test Analysis
Research Question:
Two Sample Hypothesis Test that Will Be Used and Rationale for Using It:
State the Random Variable and Parameters in Words:
State Null and Alternative Hypotheses and Level of Significance:
Method Used to Analyze Data:
Find the sample statistic, test statistic, and p-value:
Conclusion Regarding Whether or Not to Reject the Null Hypothesis:
Part B: Results Write Up
Confidence Interval Analysis:
Two Sample Hypothesis Test Analysis:
Discussion:
STAT200: Assignment #3 – Inferential Statistics Analysis and Writeup
Page 1 of 4
STAT200 Introduction to Statistics
Assignment #3: Inferential Statistics Analysis and Writeup
Purpose:
The purpose of this assignment is to develop and carry out an inferential statistics analysis plan and
write up the findings. There are two main parts to this assignment:

Part A: Inferential Statistics Data Plan and Analysis

Part B: Write up of Results
Part A: Prepare Data Plan, Analyze Data, and Complete Part A of the Assignment #3 Template
➢ Task 1: Select Variables. Review the variables you used for assignments #1 and #2. Select your
qualitative socioeconomic variable as your grouping variable and the two expenditure variables
from the variables used in these previous assignments. Fill in Table 1: Variables Selected for
Analysis with name, description, and type of variable (i.e., qualitative or quantitative).
➢ Task 2: Select and Run a One Sample Confidence Interval Analysis. For one expenditure
variable, select and run the appropriate method for estimating a parameter, based on a statistic
(i.e., confidence interval method). Complete Table 2: Confidence Interval Information and
Results, which follows the format outlined by Kozak and the course’s problem-solving approach,
including:

Random variable stated in words

Confidence interval method, including rationale and assumptions

Method used for analyzing data (i.e., web applets, Excel, TI calculator, etc.).

Results obtained

Interpretation
➢ Task 3: Select Two Sample Hypothesis Test. Using the second expenditure variable (with the
socioeconomic variable as the grouping variable), select and run the appropriate method for
making decisions about two parameters relative to observed statistics (i.e., two sample
STAT200: Assignment #3 – Inferential Statistics Analysis and Writeup – Instructions
Page 1 of 5
hypothesis test method). Complete Table 3: Two Sample Hypothesis Test Analysis, which
follows the format outlined by Kozak and the course’s problem-solving approach, including:

Hypotheses (null and alternative).

Two sample hypothesis testing method, including rationale and assumptions

Method used for analyzing data (i.e., web applets, Excel, TI calculator, etc.).

Results obtained.

Interpretation (i.e., Reject the null hypothesis OR Fail to reject null hypothesis)
Step 2: Write Up Results and Complete Part B of the Assignment #3 Template
For this 1 to 2 page section, refer to the inferential statistics data plan and computations done for Part A
of this assignment. Address the following area:
➢ Introduction. Based on the scenario you submitted for the second assignment, provide a brief
description of scenario, including the variables that were used in this analysis. Include a
completed “Table 1: Variables Selected for Analysis to show the variables you selected for
analysis.
➢ Data Set Description and Method Used for Analysis. Briefly describe the data set, using
information provided with data set and write up in Assignment #2. Also describe what
method(s) (i.e., free web applets, Excel, TI Calculator) you used to analyze the data.
➢ Results. In this section, you will report the results of your inferential statistics data analysis.
For the Confidence Interval Analysis, write one paragraph that includes:
o
Statistical method used, including rationale and whether assumptions were met.
o
Statistical Interpretation. The statistical interpretation is that the confidence interval
has a probability (1−α, where α is the complement of the confidence level) of containing
the population parameter.
o
Real World Interpretation. Explain the results in everyday language. Recommend
reviewing the text and information from the classroom for examples on how to report
results in everyday language.
STAT200: Assignment #3 – Inferential Statistics Analysis and Writeup – Instructions
Page 2 of 5
For the Two Sample Hypothesis Test Analysis, write one paragraph that includes:
o
Hypotheses that were assessed. See below table for example format:
Examples Format for Writing Null and Alternative Hypotheses, in Words
Null Hypothesis: There is no significant difference in [insert variable name]
between [insert group 1 name] and [insert group 2 name] households.
Alternative Hypothesis:
➢ For two-tailed (≠): There is a significant difference in [insert variable
name] between [insert group 1 name] and [insert group 2 name]
households.
➢ For one-tailed (>): [Insert group 1 name] has statistically significantly
higher [insert variable name] than [insert group 2 name].
➢ For one-tailed (
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