People often use the Internet to find health-related information. Two popular sources are WebMD and Wikipedia. Researchers were interested in comparing the readability of the health-related pages on these two sites.1 They measured readability using the Flesch reading ease score, which is based on properties such as sentence length and the number of syllables in the words used. A higher score indicates easier reading. (You can find more information about the Flesch reading ease score at https://yoast.com/flesch-reading-ease-score/.)

The researchers determined the reading ease scores for random samples of general health-related pages from each site. They reported that for the sample of
59
pages from Wikipedia, the mean reading ease score was
28.5
and the sample standard deviation was
14.3
. For the sample of
60
pages from WebMD, the mean reading ease score was
45.2
and the sample standard deviation was 19.8.

You will use this information to estimate the difference in mean reading ease scores between general health-related pages from Wikipedia and general health-related pages from WebMD using a 95% confidence interval.

Is it reasonable to proceed with a two-sample t confidence interval? Fill in the blanks.


Yes
Correct , because the samples are
independent
Correct and random. The sample sizes are
59
and
60
, which are both greater than
.