Think of a business place scenario that fits the criteria of a Binomial distribution. Explain the scenario and solve a related probability question. This is Analytical Tools discussion question. This is due on Friday.
Some statisticians have argued that hypothesis tests of means and proportions should be taken out of the introductory statistics course because confidence intervals are much more important and useful in practice. They even argue that in practice one should almost always do a confidence interval instead of a hypothesis test. Discuss the relationship between confidence intervals and hypothesis tests and…
These week focuses on correlation and regression. When viewing a set of data is it possible to determine if there is a correlation based on the shape of the data when graphed. If it is possible to detect a correlation by looking at the graphed data can you also determine if it is a positive or negative correlation? If so,…
In the months and weeks leading up to an election there are several polls in the news that attempt to estimate the future election result. Rarely, do these polls generate the same figures. Is this evidence that some polls are completed incorrectly? Discuss. Your post must be a minimum of 200 words and substantive. This an Analytical Tools discussion question.…
A game show contestant is presented with three closed doors. Behind one of the three doors is a new car, behind the other two, five pounds of dirty socks. The contestant is asked to select one of the three doors. The game show host then opens one of the two unselected doors to reveal socks and gives the contestant the…
Linear correlations and regression analysis are similar but there are differences. Discuss the similarities and differences between these two statistical tests. Provide an example of a question that you would answer with a correlation and a question that you would answer with regression analysis. This is an Analytical Tools final discussion question. This is due on Friday, February, 19, 2016.
Find a magazine, newspaper, or journal article that uses a confidence interval for a mean or a proportion. Share a summary of the analysis with the class. This is an Analytical Tools discussion question. This assignment is due next Wednesday, February 10, 2016.
The monthly murder rate in U.S. cities is highly positively correlated with the monthly per capita ice cream consumption. Is this evidence that committing murder leads to ice cream cravings? Is it evidence that eating large amounts of ice cream leads to murder? Discuss this correlation, what it means, and what might be the root cause. This an Analytical Tools…
In my paper I wrote the following and I need to illustrate it in the attached Excel spreadsheet First a sample size of 300,000 was chosen to represent the population, and it will reflect the same characteristics of the population from which it is taken. Next, the method used was Simple Random Sampling that is probability sampling. The sample size…
1. What is the name of the variable thatâ€™s used to predict another variable? Explanatory Standard error of the estimate Response Coefficient of determination 2. Professors at a local university earn an average salary of $80000 with a standard deviation of $6000. The salary distribution is approximately bell-shaped. What can be said about the percentage of salaries that are at…
QNT 275 Week 2 Quiz question 1 Which of the following represents a population and a sample from that population? question 2 Which of the following variables is quantitative? question 3 A stem-and-leaf diagram is constructed by separating each value of a data set into two parts. What are these parts? question 4 ABC Plumbing wants to understand its customersâ€™…