Question

6- An NCAA report states that 56.7% of football injuries occur during practice. A head trainer claims that this percentage is too high for his conference, so he randomly selects 36 injuries that occurred in the conference and finds that 17 occurred during practices.

(a) At the α = 0.10 significance level, is there significant evidence that the percentage of football injuries in his conference occurring during practice is less than 56.7%?

(b) Suppose we were able to look at all of the football injuries in the conference and determined that the true percentage of these injuries that occur during practice is 52%. Based on this information, was your decision the correct decision, a Type I error, or a Type II error?

(c) Describe in words what the P -value you computed measures. (The word probability should appear in your description.)

Answer 1