Austin and pedro are comparing the international calling plans on their cell phones. On his plan, austin pays $5 just to place a call and $2 for each minute. When pedro makes an international call, he pays $1 to place the call and $4 for each minute. A call of a certain duration would cost exactly the same under both plans.

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?