Suppose i am using the t-distribution to estimate or test the mean of a sample from a single population. if the sample size is 25, then the degrees of freedom are

answer; john stuart mill's principle of utility is your answer; /// good luck

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.

answer; (b) limited resource to satisfy virtually unlimited wants;