A researcher studying frogs is investigating the distance that a certain species of frog can jump. The jump lengths appear to be approximately normally distributed with a mean of 90 inches and a standard deviation of 15 inches.

Directions: Make a sketch of the "empirical rule" for this setting.

 

a) What proportion of frog jumps are less than 60 inches?

b) What jump lengths represent the middle 95% of frog jumps? Between and 

c) What is the probability of observing a random frog jump that is longer than  105 inches?