HELP. QUIZ!

The results of a History test and Calculus test are normally distributed.
The History test had a mean score of 68 with a standard deviation of 8.
The Calculus test had a mean score of 70 with a standard deviation of 7.2.
Joseph scored 82 on the Calculus test and Zoe scored 82 on the History
test. Which student had a higher percentile rank in their class?
a. zoe, at about 96th percentile
b. both zoe and joseph ranked at 94th percentile
c. zoe, at about 95th percentile

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)

Max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.