Essay on Statistics Midterm

Due to financial hardship, the Nyke shoe company feels they only need to make one size of shoes, regardless of gender or height. They have collected data on gender, shoe size, and height and have asked you to tell them if they can change their business model to include only one size of shoes – regardless of height or gender of the wearer. In no more 5-10 pages (including figures), explain your recommendations, using statistical evidence to support your findings. The data found are below:

(1) A study of the number of cars sold looked at the number of cars sold at 500

According to the website http://womenissues.about.com/cs/abortionstats/a/aaabortionstats.htm there are approximately 126,000 abortions conducted each day throughout the world. This website includes the abortion statistics of the world and breaks the data down to the demographics of the United States. It also discusses the decisions to have an abortion and the use of contraceptives in the United States. This was an informative website and included detailed statistics conducted by the Alan Guttmacher Institute. According to the website http://www.bls.gov/cps in 2000, gon average there were roughly 135 million employed and 6 million unemployed people in the labor force in the United States.h (p. 3) The websites definition of

Please check your numbers again, some of them seem incorrect. For example, how is that possible the subset has a more extended age range than the total sample?

7. The data set for this problem can be found through the Pearson Materials in the Student Textbook Resource Access link,

It sounds like using the stratified random sampling would be a good choice for using a particular group of people.  In stratified random sampling the individuals conducting the research know some things about the community that is providing date such as age, gender, ethnicity, and medical diagnosis. This is also a good option when there is a time restraint to obtain the information that is being gathered.  The survey would also have to be ensured it is written in a way that the average person can clearly understand the question to get a proper answer.

Assume that you are preparing a report on MM207 statistics students at Kaplan University to present to the Kaplan Board of Trustees. Prepare an appropriate graphical representation for each of the following variables.

The student data file was used as the data source. The sample size included one hundred men and one hundred women. Thirty-five out of one hundred men had not declared for a degree. Fifteen out of one hundred women had not declared for a degree. The level of

Life insurance company …. With a mean of 68 years and a standard deviation of 4 years. What proportion of the plan recipients would receive payments beyond age 75?

A pharmaceutical company is testing the effectiveness of a new drug for lowering cholesterol. As part of this trial, they wish to determine whether there is a difference between the effectiveness for women and for men. Using   = .05, what is the value the test statistic?

Even though the population surveyed is less than one hundred I believe the data presented gives great insight on the questioned asked. In statistical literacy, probability as well as mean, median, mode and more are discussed. With probability we learn how to make predictions that are pretty spot on. "Probability is defined as the likelihood that a particular outcome or event will occur," as shown in A Particular Introduction to Statistics. So now lets take a look at the data using some statistical analysis concepts. First, lets determine the probability of receiving a correct answer or receiving a wrong answer. The possible outcomes is either a correct answer or a wrong answer. Therefore, the probability equals 1 (CA) over the total of possible outcomes which is 2 (CA and WA) and 1 (WA) over 2 ( CA and WA). Both answers give us 1/2 and since they are the only possibilities they equal 1. In identifying the middle or average of the set of data is known as central tendency. These measures include, mean, median, and mode. Central Tendencies can be used in this research to see what the average number of correct responses between the groups. First we put the data set in order form smallest to greatest. Than we divided by the total number of data sets. Which gives a mean value of 7. This shows that the average number of correct responses among age groups is

The group consisted of 62 men, 62 women, and 128 children. All the men were married and all were between the ages of 20 and 41. The women ranged

In How to Lie with Statistics (Huff, 1954), Darrel Huff deciphers statistical examples and explains the means of deception that statistics and statisticians sometimes use to relay false information. Huff also conveys an underlying message of don’t believe everything you’re told, something him and my mother have in common. At first glance, a reader might think that this book will teach people how to actually lie using statistics, but that is not the case. It gives the reader a glimpse or a behind the curtain view of how easily it is to be deceived using numbers and how it is slyly achieved. Ironically he calls the book How to Lie with Statistics almost to tease his audience that the content in this book is not as it appears. To my utmost surprise, I actually rather enjoyed this book. It was a fairly simple read that was filled with new information and showed me how to look closer at statistical figures in the future. The humor was spot on so much, so that I even chuckled aloud occasionally. For the icing on the cake, I even expanded my vocabulary to learn fun words such as rotogravure.

c.)Find a 95% confidence interval for the difference between the above obtained mean starting salaries.

For each of the following three populations, indicate what the sampling distribution for samples of 25