For a probability density function f(x)=1−x2 for the range −1 < x < 1 and 0 elsewhere, what is the lower limit and what is the upper limit for P(x < 0.5)?

A driver’s reaction time to visual stimulus is normally distributed with a mean of 0.4 seconds and a standard deviation of 0.05 seconds. What is the value of standard normal variable (z) if a reaction requires less than 0.5 seconds? 

The following box plots represent a sample of student scores on four exams. Which exam has scores that are outliers?

Skip this question. Bonus points added here.

Quiz_3_tables.pdf

The following is an Excel spreadsheet that gives a sample of family incomes along with the purchase price of the family’s house. Which of the following would help make the relationship between the features clearer?

What does the scatter plot indicate about the difference between smokers and non-smokers?

Select the code that generates the plot for the given data.

How did Minimalism differ from Abstract Expressionism?  Select all that apply.

From the sample represented by the box plots below, which type of vehicle has the highest range of miles per gallon?