# Confidence interval. Mathematics & Economics Math Problem (Math Problem Sample)

Read/review the following resources for this activity:

Textbook: Chapter 8 (this is the link to my textbook : http://cnx(dot)org/contents/30189442-6998-4686-ac05-ed152b91b9de@23.33.)

Lesson

Scenario/Summary

You will complete a Course Project in this course that will span two weeks. The final project is due the Sunday of Week 7. The project is broken into two parts. You will complete Part I in Week 6 and Part II in Week 7. In Week 6, Confidence Intervals will be explored and in Week 7 Hypothesis testing will be explored. (this is week 6 part 1 of the project)

A confidence interval is a defined range of values such that there is a specified probability that the value of a parameter lies within the interval.

In Part I of this project, you will pick a topic, complete research and provide a write-up that includes calculations. Round all values to two decimal places when appropriate.

Deliverables

Choose a Topic where you can gather at least 50 pieces of data.

Examples of Topics

The Golden Gate Warriors Points Per Game in 2016 (use the points scored in the first 50 games).

High School Graduation Rates by State (use the graduation rates for all 50 states)

Average Tuition Rates in the US (You have to find the tuition rates of 50 college/universities).

The prices of a hotel room per night in a major city (You have to find the price of the same night of hotels in one city).

Weights of 50 babies at birth.

Write at least a 1-Page Report

Open a Word Document

Introduction--Provide a description of your topic and cite where you found your data.

Sample Data—Include a 5x10 table including your 50 values in your report. You must provide ALL of your sample data.

Problem Computations—For the topic you chose, you must answer the following:

Determine the mean and standard deviation of your sample.

Find the 80%, 95%, and 99% confidence intervals.

Make sure to list the margin of error for the 80%, 95%, and 99% confidence interval.

Create your own confidence interval (you cannot use 80%, 95%, and 99%) and make sure to show your work. Make sure to list the margin of error.

Problem Analysis—Write a half-page reflection.

What trend do you see takes place to the confidence interval as the confidence level rises? Explain mathematically why that takes place.

Provide a sentence for each confidence interval created in part c) which explains what the confidence interval means in context of topic of your project.

Explain how Part I of the project has helped you understand confidence intervals better?

How did this project help you understand statistics better?

Required Software

Microsoft Office: Word and Excel

Confidence Interval

Author’s Name

Institutional Affiliation

Confidence Interval

Introduction

Education nowadays is very important and is becoming the basic need of an individual in building his career. The United States is amongst the topmost developed countries in the world and this is because of the rise in its educational rate every year. To study these ups and downs, the average graduation rate of each state by 2020 will be used the data to measure confidence interval at different levels (Anonymous, 2020). This data describes the average high school graduation rate in all the states of USA. Analysis of this data will help the statisticians to demonstrate the future trends of education in the United States.

Sample Data LINK Excel.SheetBinaryMacroEnabled.12 "E:\\Academic Writing\\7th Month\\Order No. 7\\data.csv" "data!R1C1:R52C4" \a \f 5 \h \* MERGEFORMAT

### Other Topics:

- Interpreting normal distribution. Mathematics & Economics Math ProblemDescription: Pick three bills from the last 12 months and change the values into z-scores. What does the z-score tell you about that particular month? Months Chosen: January, May and October...3 pages/≈825 words | APA | Mathematics & Economics | Math Problem |
- Poisson Probability Distribution Mathematics & Economics Math ProblemDescription: Poisson Probability Distribution Mathematics & Economics Math Problem The city chosen is Chicago in Illinois. In Chicago the average number of days of precipitation in April was 12 days. 86 mm rain was recorded (Anonymous, 2020). The results show that it rained heavily in Chicago in the month of April....3 pages/≈825 words | APA | Mathematics & Economics | Math Problem |
- Misleading Graph-Unemployment Rate under President Obama. EconomicsDescription: Misleading graphs are commonly used by the media, in politics and professional disciplines such as medicine. Over the years, renowned media outlet Fox News has been accused of publishing and broadcasting various misleading graphs to sway public opinions about certain contentious public opinions....3 pages/≈825 words | APA | Mathematics & Economics | Math Problem |