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Participants in a study investigating the relationship between coffee consumption and exercise were asked to report the number of hours they spent per week exercising. All participants were categorized into one of 4 groups by their coffee consumptions: low, moderate, frequent, and reliant. After conducting an ANOVA test at a significance level of 0.05, the p-value was low enough to conclude that there is a significant difference in mean exercise time across the groups of coffee drinkers. If we now proceed to conduct pairwise comparison tests for every possible combination of the four groups, what will our new adjusted significance level be?

The data below are the monthly average high temperatures for Chicago. 40, 42, 48, 63, 72, 78, 87, 84, 76, 65, 58, 41 What are the first and third quartiles? (Q1 and Q3)

A large study on pediatric asthma measured forced expiratory volume (FEV), defined as the amount of air a person can exhale during a single forced breath.  The plot below displays FEV by age. How can we describe the relationship between age and FEV?

The Texas A&M men’s basketball team consists of 16 players. The boxplot below displays the distribution of the players’ heights. What height separates the shortest 8 players from the tallest 8 players? Choose the best answer. 

A statistics professor commuting to Texas A&M University from the south end of town in the mornings recorded the travel time, in minutes, from the Texas Avenue exit on Highway 6 to the intersection of University Drive and Texas Avenue. The recorded times, rounded to the nearest whole minute, were collected for n=20 trips under varying traffic conditions and are displayed in the plot below. Which of the following is TRUE?  

A team of nutritionists is interested in testing the effect of wheat grass shots on health outcomes. What is one method they could use to implement blinding in their experiment?

A medical researcher is interested in reducing patients’ cholesterol levels and randomly assigns participants to receive either a new drug or an existing drug. Below is a data matrix showing a portion of the data collected in this study. What type of variable is income? Sex Age Drug Income Smoke Cholesterol Systolic BP Diastolic BP Female 42 old Under $10,000 No 278 155 91 Male 44 old $100,001 to $150,000 No 255 132 83 Male 53 new Above $360,000 Yes 305 161 97 … … … … … … … Male 40 old $50,001 to $60,000 Yes 298 163 96  

Two lemon farmers are debating who produces better lemons. To settle their debate, they recruit a sample of 100 individuals to taste lemonade made from lemons from each farm. Of these participants, 57 preferred the lemonade from Luck Lemons Farm, while the remaining 43 preferred the lemonade from Lemons R Us. Which of the following is an inferential statement?

A study is examining the relationship between sodium consumption and blood pressure. A total of 100 participants are selected for the study, and their daily sodium intake (in mg) is recorded for each subject daily over the course of the next year. After one year, researchers measure each participant’s blood pressure and compare it to their average daily sodium intake. This is a _______ study.

The following table contains a sample of data collected by a researcher on selected universities in Texas. University Undergraduate Enrollment Highest Statistics Degree Awarded  Type Mascot Texas A&M 59,933 PhD Public Mammal UT – Austin 42,444 PhD Public Mammal Rice 4,574 PhD Private Bird Baylor 15,155 PhD Private Mammal SMU 7,115 PhD Private Mammal University of Houston 37,946 Masters Public Mammal What type of measurement is the “Undergraduate Enrollment” variable?