The accompanying data on x = student-teacher ratio for a random sample of 25 high schools in Maine selected from a population of 85 high schools are consistent with summary values for the state of Maine that appeared in an article in the Bangor Daily News (September 22,2016, bangordailynews.com/2016/09/22/mainefocus/we  -discovered-a-surprise-when-we-looked-deeper-into -our-survey-of-maine-principals/?ref=moreInmidcoast). The corresponding normal scores are also shown.

Student-Teacher .......................... Ratio (x) Normal Score
9.0 .............................................................. -1.868
10.0 ............................................................ -1.403
11.0 ............................................................ -1.128
11.2 ............................................................ -0.919
11.6 ............................................................ -0.744
11.7 ............................................................ -0.589
11.8 ............................................................ -0.448
11.9 ............................................................ -0.315
12.0 ............................................................ -0.187
12.1 ............................................................ -0.062
12.5 ............................................................. 0.062
12.6 ............................................................. 0.187
13.0 ............................................................. 0.315
13.2 ............................................................. 0.448
13.6 ............................................................. 0.589
13.7 ............................................................. 0.744
14.0 ............................................................. 0.919
14.5 ............................................................. 1.128
14.9 ............................................................. 1.403
15.0 ............................................................. 1.868

Construct a normal probability plot. Is it reasonable to assume that the distribution of student-teacher ratio is approximately normal?