STAT 200 Assignment 3 Template

Assignment #3: Inferential Statistics Analysis and Writeup

Editing note: Delete all instructions in your final submission.Make sure all tables are complete on the same page – that they are NOT split across 2 pages! 

Identifying Information

Student (Full Name):

Class:

Instructor:

Date:

Part A: Inferential Statistics Data Analysis Plan and Computation

INTRODUCTION

Use all the 30 observations in the given data set for the analysis.

Begin with a short paragraph describing your scenario, including the reason for this analysis. 

Provide a second paragraph briefly describing the data set that you are using for your analysis.

Use complete sentences!

Table 1: Variables Selected for Analysis

Fill in the table with your qualitative socioeconomic variable and your 2 expenditure variables.

Variable Name 

Variable Type

Description 

Qualitative or Quantitative

Socioeconomic

Qualitative

Expenditure

Expenditure

CONFIDENCE INTERVAL ANALYSIS

For one expenditure variable, estimate the population parameter for the measure of center and complete the following table.

Table 2: Confidence Interval Information and Results

Name of Variable:

State the Random Variable and Parameter in Words:

Provide the confidence interval formula and confidence level:

State and check the assumptions for confidence interval:

Calculation of the sample statistic and the confidence interval:

Statistical Interpretation: 

  

HYPOTHESIS TESTING

Using your qualitative socioeconomic variable to group the other expenditure variable into two groups. Then conduct a two sample hypothesis test and complete the following table.

Table 3: Two Sample Hypothesis Test Analysis

Research Question:

Two Sample Hypothesis Test that Will Be Used:

State the Random Variable and Parameters in Words:

State the Null and Alternative Hypotheses and the Level of Significance:

Calculation of the sample statistic, test statistic, and p-value:

Conclusion Regarding Whether or Not to Reject the Null Hypothesis:

Real-world interpretation

Part B: Results Write Up

Confidence Interval Analysis:

Provide a brief paragraph describing the results of your confidence interval analysis. Include the statement of the question, the CI with the level of confidence, and the real-world interpretation of the CI.

Two Sample Hypothesis Test Analysis:

Provide a brief paragraph describing the results of your hypothesis test. Include the statement of the question, the p-value, and the real-world interpretation of the results. The word “hypothesis” should not appear in your interpretation of the results!