Way to go today! I realize it was long and boring, but you guys made it through it! Great news though, we are back on schedule now which means more homework in class! But onto assignment 22.
Something I forgot to mention in class is that we call sigma/sqrt(n) the standard deviation of x-bar.
Well s/sqrt (n) = standard error.
Questions 2-5 are just a simple one-sample t-test, so that should be simple enough.
Questions 9-15: What kind of procedure is this?
In this case, they didn't necessarily give you the differences, but you can clearly see that each student has TWO measurements: two thighs were hit with tennis balls. (And of course, I gave you this example in class, so that might have helped :) )
Be careful on calculating the t-test statistic. Remember we only care about the differences. You need to use statcrunch to do this.
Good Luck!
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