Question

42. Long words Mary was interested in comparing the mean word length in articles from a medical journal and an airline’s in-flight magazine. She counted the number of letters in the first $200$ words of an article in
the medical journal and in the first $100$ words of an article in the airline magazine. Mary then used Minitab statistical software to produce the histograms shown.

Short answer

The random requirement was not met.

Step-by-step solution

Given information

Mary counted the number of letters in the first $200$ words of an article in
the medical journal and in the first $100$ words of an article in the airline magazine.

Explanation

Determine the Random, Normal, and Independent are the requirements from the given histogram:

Random, Normal, and Independent are the requirements for two-sample$t$ methods.
The samples of words were conveniently chosen as the first $200$words, which are not representative of all words, hence the Random requirement was not met.