A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 178.9-cm and a standard deviation of 1-cm. Find P84, which is the length separating the shortest 84% rods from the longest 16%.
mean- 178.9
sd- 1
find P^84 (the length separating the shortest 84% rods from the longest 16%

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

Need now 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.