Provide an appropriate response.Use the ogive below to approximate the cumulative frequency for 20 hours.  

Approximately 8-10% of the world’s population have blue eyes. Approximately 70-80% of the world’s population has brown eyes. Which measure of central tendency would be best for eye color? 

Determine whether the study is an observational study or an experiment.A medical researcher obtains a sample of rock climbers suffering from diabetes. She randomly assigns 89 people to a treatment group and 89 to a placebo group. The treatment group receives a medication over a period of three months and the placebo group receives a placebo over the same time frame. At the end of three months the patients’ symptoms are evaluated.

The warm up times for 10 different climbers are listed below. Find the five number summary. What is Q3?  17, 19, 20, 23, 25, 29, 33, 35, 38, 41

The distribution of incomes tend to be skewed- most have average incomes, and a few have very high incomes. What measure of central tendency would be the best choice for this kind of data? 

A researcher surveys customers at a high-end organic grocery store to measure public opinion on genetically modified foods.Which of the following best explains why the results may not accurately reflect public opinion?

For a given data set, the standard deviation is 4. What is the variance? 

Identify the data set’s level of measurement.Avalanche risk rating: Low, Moderate, Considerable, High, Extreme

Provide an appropriate response.A student receives test scores of 60, 83, and 70. They earn a 90 on their homework. Each test is worth 20% of the final grade, the homework is worth 40% of the final grade. What is the student’s mean score in the class? (Hint: Multiply the scores by their weights, and add them up)    

Which of the following is a correct APA Style Bibliographic Entry for the book accessed via the provided Warren Library link?