What is the mean score for mr. wilson's test scores? round to the nearest tenth.

 The required mean score is 73.93.

Step-by-step explanation:  We are given to find the mean score for Mr. Wilson's test scores.

We know that

the mean of a given set of scores is equal to the sum of the scores divided by the number of students who scored the marks.

From the given information, we have

3 students with score 40, 1 student with score 50, 4 students with score 60, 6 students with score 70, 4 students with score 80, 8 students with score 90 and 2 students with score 100.

Therefore, the MEAN score of Mr. Wilson's test scores is given by

Thus, the required mean score is 73.93.

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse