Let’s assume that, over the years, a paper and pencil test of anxiety yields a mean score of 35

Let’s assume that, over the years, a paper and pencil test of anxiety yields a mean

score of 35 for all incoming college freshmen. We wish to determine whether the

scores of a random sample of 20 new freshmen, with a mean of 30 and a standard

deviation of 10, can be viewed as coming from this population. Test at the .05 level

of significance.