ALL R assignments are absolutely due by midnight of Thursday 24 May, no exceptions!
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Finding a confidence interval using t-test in R:
Work problem 7.4.8: I copied the problem below.
I have typed up the data already:
Just click-hold on the link and choose “open in Rstudio”
You will create a vector containing the data, and then do a t-test on that vecotr of data using the t.test function. Copy and paste to Piazza as you did with the previous assignment, and then type the confidence interval itself at the top of your post. When you type in the confidence interval, round the numbers to the nearest whole number.
7.4.8. The following table lists the typical cost of repairing
the bumper of a moderately priced midsize car damaged
by a corner collision at 3 mph. Use these observations
to construct a 95% confidence interval for μ, the true
average repair cost for all such automobiles with similar
damage. The sample standard deviation for these data is
s =$369.02.
Make/Model
Repair
Cost Make/Model
Repair
Cost
Hyundai Sonata $1019 Honda Accord $1461
Nissan Altima $1090 Volkswagen Jetta $1525
Mitsubishi Galant $1109 Toyota Camry $1670
Saturn AURA $1235 Chevrolet Malibu $1685
Subaru Legacy $1275 Volkswagen Passat $1783
Pontiac G6 $1361 Nissan Maxima $1787
Mazda 6 $1437 Ford Fusion $1889
Volvo S40 $1446 Chrysler Sebring $2484
Source: www.iihs.org/ratings/bumpersbycategory.aspx?
Second assignment: writing up about your Datacamp course that you chose for the snow day make-up.
You will make a post to this OpenLab blog. To do this you must join OpenLab and join this course – you may already have done this. Choose this course once you log in to OpenLab, and then click on “Dashboard” on the right side of the page. This will take you to the Dashboard where you will find a link “Posts” on the left side: use it to “Add New”.
In your post, you should do the following:
First, give your name.
Give the title of your course and the link to it: you can copy the link from this post
Describe briefly why you chose it.
Give a brief (but not vague!) description of the topics that are covered in that course.
Choose one specific example of a thing you learned that you found interesting or useful. Here you will details, and also tell us why you chose it to write about.
