MATH 399N (MATH399N)

1. Question: A linguistics expert is interested in learning about the amount of time people in his industry spend studying a new language. A random sample of 15people in his industry were surveyed for a hypothesis test about the mean time people studied a new language last year. He conducts a one-mean hypothesis test, at the 10%significance level, to test the recent publication that the amount of time people in his industry are studying a new language was 30minutes per week. dfdf t0.10t0.10 t0...

Initial Post Instructions Find an example of a confidence interval in the news, scholarly source or medical journal. Summarize the article/study. Does the article/study include the sample size and the level of confidence used to create the confidence interval? Explain what the confidence interval means in context of the news article or scholarly source. Follow-Up Post Instructions Respond to at least two peers or one peer and the instructor. Further the dialogue by providing more information ...

Initial Post Instructions Keep your eyes and ears open as you read or listen to the news this week. Find/discover an example of statistics & probability in the news to discuss the following statement that represents one of the objectives of statistics analysis: "Statistics and Probability helps us make decisions based on data analysis." Briefly discuss how the news item or article meets this objective. Cite your references. Also, keep in mind and discuss how the impact of your study on your p...

Initial Post Instructions Medical professionals can find relationships between variables. The more you drink alcohol, the less functionality of your liver. The less carbohydrates a person intakes, the lower their Body Mass Index. Data can be collected and organized as an ordered pair (x, y). The data can be analyzed to determine the type and strength of a correlation and to calculate a regression line in order to make a prediction. Use the internet to find a data set of ordered pairs. Key ter...

Initial Post Instructions Keep your eyes and ears open as you read or listen to the news this week. Find/discover an example of statistics & probability in the news to discuss the following statement that represents one of the objectives of statistics analysis: "Statistics and Probability helps us make decisions based on data analysis." Briefly discuss how the news item or article meets this objective. Cite your references. Also, keep in mind and discuss how the impact of your study on your p...

Initial Post Instructions After exploring different types of graphs this week, it is unfortunate to learn that there are sometimes misleading graphs used in the news, politics, medicine, etc. in order to sway a decision or belief. Some items to watch out for in graphs area. 1. Is there a title that explains what the graph is displaying? 2. Are numbers on the axis spaced out proportionally or have they been varied to create a dramatic impression? 3. Is the graph too loud? Does it have too man...

Initial Post Instructions When data is collected, the most common calculations computed are the Measures of Central Tendency, mean, median and mode. It is important to know how to compute these values and it is also extremely important to know what these values mean in context of the data set. Use the internet to find a data set. Key terms to search: Free Public Data Sets and Medical Data Sets. 1. Introduce your Data Set and Cite the Source. 2. Why was this data interesting to you? 3. Cal...

Initial Post Instructions Keep your eyes and ears open as you read or listen to the news this week. Find/discover an example of statistics & probability in the news to discuss the following statement that represents one of the objectives of statistics analysis: "Statistics and Probability helps us make decisions based on data analysis." Briefly discuss how the news item or article meets this objective. Cite your references. Also, keep in mind and discuss how the impact of your study on your p...

Initial Post Instructions After reviewing data from a sample, an inference can be made about the population. For example, Find a data set on the internet. Some suggested search terms: Free Data Sets, Medical Data Sets, Education Data Sets. 1. Introduce your Data Set and Cite the Source. 2. What trends do you notice in your data set? 3. Based on the trends and the history of your data set, make a claim. What kind of test (left, right, two tailed) would you have to complete? 4. Explain the st...