Day 11 Mastery Assessment

A proactive mindset increases the Circle of Concern and reduces the Circle of Influence.

Which of the following is statements is FALSE regarding the IRSC Career Center:

Here are the daily per capita beer consumption for Fridays in February and March for this Sao Paulo neighborhood: 22.8,   24.2,   21.4    26.2,    22.7,    21.3,   24.2   25.0 Here are the daily per capita beer consumptions for the Saturdays immediately following the Fridays whose data is given above: 28.9,   30.2,   24.6,   26.5,   29.1,   28.8,   28.6,   29.8 The correlation coefficient between Friday and Saturday beer consumption was calculated to be r = -0.6187 Select the correct interpretation of this value. 

A Dairy Queen restaurant recorded daily high temperatures (in degrees Fahrenheit) and sales volume (in dollars) for a sample of days this summer. they found the correlation beteen the two variables to be 0.825. If they convert the temperatures to degrees Celsius, the new correlation will (degrees Celsius = 5/9 (degrees Fahrenheit – 32).

A recent study indicated that the diabetes drug metformin (a glucose-lowering drug) appears to lower users’ risk of developing age-related diseases such as cancer, cardio-vascular disease, and dementia. The study followed diabetic men over the age of 65, all of whom had been prescribed a diabetes drug by their Veteran’s Administration hospital physicians. At the end of nine years, the researchers compared the rates at which the metformin users developed other diseases with that of the men who were taking a different diabetes drug.   Identify the Explanatory and Response variables.

The World Health Organization collected data on obesity in 182 countries around the world.  The following graph shows the percent people who are “overweight or obese,” where the individuals have been grouped into separate categories according to their country’s income level.                   Which one statement below best describes the graph?

  Lake Superior has ice for a long period each winter.   Below is some data and a scatterplot of the number of days ice was present at one of the stations on Lake Superior versus the mean temperature for the months of December through April, for nine seasons (1966-67 through 1974-75).                         The least squares regression line fit to this data is Days of Ice = 253.0 -6.254 x Mean Temperature.   with r-squared = 57.1%.  Use the least squares regression equation to estimate the number of days of ice for a mean temperature of 25 degrees.  (Round to two decimal places.)

The following chart shows the percentages of injuries to females that received emergency room care, according to the place where the injury occurred, comparing 2005-2008 and 2011-2014. The percentages don’t add up to 100%, which means that not all locations fit one of these categories.                                    A large percentage of injuries occur at the home (inside or outside).   In 2011-2014, what percentage of injuries occurred at the home (inside or outside)? (Enter a numeric value only.  Do not include the percent notation (%).)  

A statistics instructor creates a student survey to get to know her students.  She created the survey from questions students provided.  Select ALL graphs that could be used to summarize the following survey question:  Would you eat pineapple on pizza?