Barry is trying to calculate the distance between point e(3, 1) and point f(4, 7). which of the following expressions will he use? square root of the quantity of 7 minus 1 all squared plus 4 minus 3 all squared square root of the quantity of 7 minus 3 all squared plus 4 minus 1 all squared square root of the quantity of 7 minus 4 all squared plus 3 minus 1 all squared square root of the quantity of 4 minus 7 all squared plus 1 minus 3 all squared

1. suppose that scores on a knowledge test are normally distributed with a mean of 71 and a standard deviation of 6. a. label the curve: show the mean and the value at each standard deviation: b. if angelica scored a 76 on the test, what is her z-score? (draw her score on the curve above and label) c. what percent of students did angelica score higher than? how can you tell? d. if 185 students took the test, how many students scored higher than angelica?