Questions from Statistics

Q: Can mindful yoga have a beneficial impact on alcohol use in high

Can mindful yoga have a beneficial impact on alcohol use in high-risk adolescents? Read excerpts from the research published in The Journal of Child and Family Studies and answer the questions that fo...

Q: Patients with Alzheimer’s disease are randomly divided into two groups. One

Patients with Alzheimer’s disease are randomly divided into two groups. One group is given a new drug, and the other is given a placebo. After six months they are given a memory test to see whether th...

Q: One of the authors wanted to determine the effect of changing answers

One of the authors wanted to determine the effect of changing answers on multiple-choice tests. She had advised her students that if they had changed their minds about a previous answer, they should r...

Q: The graph shows the rates of visits to the emergency room (

The graph shows the rates of visits to the emergency room (ER) for injuries by gender and by age. Note that we are concerned with the rate per 100 people of that age and gender in the population. (Sou...

Q: The Pew Research Center documents the variety of ways in which Americans

The Pew Research Center documents the variety of ways in which Americans use social media. The bar chart shows the frequency of use for three social media sites among adult social media users. a. Whic...

Q: The Pew Research Center gathered data in 2018 on American social media

The Pew Research Center gathered data in 2018 on American social media use by gender. The bar graph shows the percentage of Internet users who use these social media platforms. a. Of these three socia...

Q: For each situation, describe the type of statistical graph that could

For each situation, describe the type of statistical graph that could be made to answer the statistical question posted. a. We have the systolic blood pressures by gender of a large number of elderly...

Q: For each situation, describe the type of statistical graph that could

For each situation, describe the type of statistical graph that could be made to answer the statistical question posted: a. We have the systolic blood pressures by gender of a large number of elderly...

Q: The following bar chart shows a comparison of breast cancer rates for

The following bar chart shows a comparison of breast cancer rates for those who took HRT and those who took a placebo. Explain why the graph is deceptive, and indicate what could be done to make it le...

Q: A group of students held their breath as long as possible and

A group of students held their breath as long as possible and recorded the times in seconds. The times went from a low of 25 seconds to a high of 90 seconds, as you can see in the stemplot. Suggest im...