13. A study of 40 English composition professors showed that they spent, on average, 12.6 minutes correcting a student's term paper. a. Find the best point estimate of the mean.
b. Find the 90% confidence interval of the mean
time for all composition papers when
o= 2.5 minutes.
c. If a professor stated that he spent, on average,
30 minutes correcting a term paper, what would be
your reaction?

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c

What kinds of numbers make up the set of numbers called the real numbers? give examples when you explain a number type. there are a limited set of types of numbers, but an unlimited number of examples of these numbers.

Asquare is dilated by a scale factor of 1.25 to create a new square. how does the area of the new square compare with the area of the original square? a)the area of the new square is 1.25 times the area of the original square. b)the area of the new square is 2.50 times the area of the original square. c)the area of the new square is 1.252 times the area of the original square. d)the area of the new square is 1.253 times the area of the original square.