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Question: uinstructurecomcourses1933796ytilesfolder latr 20assignmentslab2preview98187501 of 3 zoom 2 this problem deals...

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uinstructure.com/courses/1933796ytilesfolder /Latr 20Assignmentslab2?preview-98187501 of 3 ZOOM 2. This problem deals with the care dataset (type cars to sce what it looks like). (a) Report the mean and standard deviation (you may consider the commands noan, var, sqrt, and ad) of the Spoed variable in the cars dataset. (b) Reproduce the following plot, which is a histogram of the spood variable: Histogram and Density of Speed 3 SAMSUNG FB 5 9 0
les nstructure.com/courses/1953796/files/folder/Lab20AssignmentsLab27preview 9818750 Page く You will be graded on the following criteria: i. The plot includes the histogram of speed, as a probability density (not as frequencies) ii. The x-axis is labeled Speed, the y-axis is labeled Density, and the title is His- togram and Density of Speed ii. A vertical line is plotted at the mean of speed. This line should be blue, dashed, and thicker than the rest. (Note: read the documentation for abline, or check abline.pdf on Canvas) iv. A dashod line of a Normal density, with mcan and standard deviation oqual to those
Page3 oO20 iv. A dashod line of a Normal density, with mean and standard deviation equal to those from part (a). The curve should be red and dashed (different dashed pattern from (ii). (Note: read the documentation for the command dnorm. The command seq may also be useful) v. The x-axis should go from 0 to 30. The y-axis should be tall enough to see all the curves clearly.
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