Putting It Together: Demon Roller Coaster Retrieve the data 7_3_13 at www.pearsonhighered.com/sullivanstats using the file format of your choice for the text you are using. The data represent the time spent waiting in line (in minutes) for the Demon Roller Coaster for 100 randomly selected riders.
(a) Draw a relative frequency histogram with lower class limit of the first class equal to 0 and class width 20.
(b) Comment on the shape of the distribution.
(c) Draw a normal probability plot to assess the normality of the random variable “wait time.”
Step 1 of 5) Demon Roller Coaster Retrieve the data 7_3_13 at www.pearsonhighered.com/sullivanstats using the file format of your choice for the text you are using. The data represent the time spent waiting in line (in minutes) for the Demon Roller Coaster for 100 randomly selected riders. (a) Draw a relative frequency histogram with lower class limit of the first class equal to 0 and class width 20. (b) Comment on the shape of the distribution. (c) Draw a normal probability plot to assess the normality of the random variable “wait time.” Excel 1. Load the XLSTAT Add-in. 2. Enter the raw data into Columns A and B. 3. Select the XLSTAT menu; click Nonparametric tests. Select Comparison of two samples. 4. Place the cursor in the Sample 1 cell. Highlight the data in Column A. Place the cursor in the Sample 2 cell. Highlight the data in Column B. Select the “One column per sample” radio button. Be sure the “Column labels” box is not checked unless you have named Columns A and B. Check the “Mann–Whitney test” box. 5. Click the Options tab.
