Give an example of an interval estimate of an average or proportion you may use in your daily life. For instance, you may say that you are pretty sure your average commute time is between 25-30 minutes, or you are fairly confident that between 60-65% of the population love dogs. Collect some data to see … Read more
Collect some quantitative data (if your data from week 1 is quantitative, you can use it). Find the sample mean and standard deviation. Plot it in a histogram. Does the data seem to follow the bell curve of the normal distribution? What features of the data do or do not fit in with the … Read more
For this assignment, you read the article written by Buzi, Smith, and Weinman (2014) located under your weekly resources. These authors used a chi-square analysis to analyze the data from their research study. Now, make a summary of the research, including background information on the topic, the main hypotheses, methods, results, and the conclusions … Read more
Collect some quantitative data (if your data from week 1 is quantitative, you can use it). Find the sample mean and standard deviation. Plot it in a histogram. Does the data seem to follow the bell curve of the normal distribution? What features of the data do or do not fit in with the shape … Read more
Consider a 10 question multiple choice test. How many answer options would you need on each item to ensure that the probability of a student randomly guessing earning a passing mark is less than 1 percent? How does the required number of answer options change if the total number of items is reduced to 5? … Read more
Post (300+ words): Give an example of an interval estimate of an average or proportion you may use in your daily life. For instance, you may say that you are pretty sure your average commute time is between 25-30 minutes, or you are fairly confident that between 60-65% of the population love dogs. Collect some … Read more
1 – Fitness data. Various measures of heart and pulse rate were taken on men in a physical fitness course at N.C. State Univ. The information provided has the following information: · runpulse: Pulse rate while running · maxpulse: Maximum pulse rate · rstpulse: Resting pulse rate · oxy: oxygen consumption Write a report describing … Read more
Take the data provided in the file “assignment2.xls” (Excel file). These data have been collected through a survey. The survey was interested in three concepts, namely: Customer loyalty: measured with x1, x3, x4 and x11 Customer satisfaction: measured with x2, x8, x9 and x10 Service quality: measured with x5, x6, x7 All … Read more
Describe the distribution of hours worked each week. Provide appropriate numerical summaries based on the shape of your distribution. Describe the shape, center, and spread using numerical measures that best describe the distribution. In your description, include an interval of typical values and a discussion of variability. Do the data suggest that there is a … Read more
Post (300+ words): Think of some discrete random variable you observe on a regular basis. For example, it could be the (rounded) number of hours you sleep, how many gallons of gas are in your car when you get into it, how many boxes of cereal are in your house, how many days between grocery … Read more