Oklahoma City Community College

MATH 2013: Demonstration #1

Please show work and write answers in complete sentences.

I.            In a recent academic year, the average Oklahoma ACT score was 20.5, and the average national ACT score was 21.1. The chart below shows the average ACT scores.

This graph does show that Oklahoma’s average ACT score is lower than the national average. However, what is misleading about the information shown (or not shown) in the graph?

II.          A court-appointed auditor is studying years of experience and salary for nurses at a hospital. The hospital has six floors on which the nurses work. Explain the differences between creating a cluster sample and a stratified sample for this study. You do not have the years of experience or salary data yet – please do not use those variables in the design.

III.        The table below summarizes recent data about hospitalization for heart attack.

Fill in the table below with the requested percentages. Round answers to the nearest hundredth of a percent.

Female 
Age 18-44 
Age 45-64 
Female and Age 65-84 
Female and Age 85 and up 

IV.       Tight Hamstring Syndrome (THS) in children has been attributed to a number of disorders. A Meta-Analysis of clinical research in Germany (102 children) between 1980 and 2001 estimated that about 70% of suffered from severe underlying diseases.

[A]   Is this a study involving a binomial variable? If so, what is a “success” in this sample? If not, why not?

[B]   What are the mean (expected value) and standard deviation of this variable? Round to tenths if needed.

[C]   PROBABILITIES: Show the commands that you used on your TI-83/84. Round answers to three decimal places.

1)       What is the probability that exactly 71 of the cases were related to severe underlying diseases?

2)       What is the probability that less than 63 of the cases were related to severe underlying diseases?

3)       What is the probability that no less than 76 of the cases were related to severe underlying diseases?

4)       Would it be unusual if more than 80 cases were related to severe underlying diseases? Support your answer with a calculation and an explanation.

V.         A survey of 1200 randomly selected parents across the Eastern Time zone of the United States asked about tackle football before high school for their kids.

[A]   Fill in the Undecided number. Fill in the second row with relative frequencies as percentages.

SafeNot SafeUndecided
492636 
   

[B]   A similar survey in Texas had the percentages shown in the table below. Fill in the Undecided percentage.

SafeNot SafeUndecided
57%42% 

[C]   There is a 1.36 percentage point margin of error in the Undecided category of the Texas survey, and there is a 1.76 percentage point margin of error in the Undecided category of the Eastern Time zone survey. Do you think there is a significant difference in the percentage of Undecided parents in these polls? Why or why not? (PLEASE DO NOT GO LOOKING UP FANCY FORMULAS, CALCULATOR PROCEDURES OR TABLES. Keep your answer simple.)

Research Paper 101
Calculate your paper price
Pages (550 words)
Approximate price: -

Reasons to trust Research Paper 101

On Time Delivery

We pride ourselves in meeting the deadlines of our customers. We take your order, assign a writer but allow some more time for ourselves to edit the paper before delivering to you. You are guaranteed a flawless paper on a timely manner...

24x7 Customer Live Support

Our team at Research Paper 101 is committed to handling your paper according to the specfications and are available 24*7 for communication. Whenever you need a quick help, you can talk to our writers via the system messaging or contact support via live chat and we will deliver your message instantly.

Experienced Subject Experts

Online Experts from Research Paper 101 are qualified both academically and in their experiences. Many are Masters and Phd holders and therefore, are qualified to handle complex assignments that require critical thinking and analyses...

Customer Satisfaction

We offer dissertation papers as per students’ wishes. We also help craft out the best topics and design concept papers. By ordering with us, you are guaranteed of defending and making through those hard faced professors in the defense panel!

100% Plagiarism Free

We at Research Paper 101 take plagiarism as a serious offence. From the start, we train our writers to write all their papers from scratch. We also check if the papers have been cited appropriately. Our website also has a tool designed to check for plagiarism that has been made erroniusly. In essense, the paper you get will be 100% legit...

Affordable Prices

We understand that being a student is very challenging, some students balance between work and studies in order to survive. We therefore offer pocket friendly rates that are very competitive in the market.

Try it now!

Calculate the price of your order

Total price:
$0.00

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.

Essays

Essay Writing Service

No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.

Admissions

Admission Essays & Business Writing Help

An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.

Reviews

Editing Support

Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.

Reviews

Revision Support

If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.

error: