contestada

Exhibit 6-2 the weight of football players is normally distributed with a mean of 200 pounds and a standard deviation of 25 pounds. 26. refer to exhibit 6-2. what is the minimum weight of the middle 95% of the players?
a. 196
b. 151
c. 249

Respuesta :

nobillionaireNobley
The question is asking for the lower bound of the 95% two tailed Confidence interval of the normally distributed population.

95% C.I. is given by 200 + or - 1.96(25) = 200 + or - 49 = (151, 249)
Therefore, the minimum weight of the middle 95% of players is 151 pounds.