Author Question: At the U.S. Open Tennis Championship a statistician keeps track of every serve that a player hits ... (Read 142 times)

tingc95 · **on:** Jun 24, 2018

At the U.S. Open Tennis Championship a statistician keeps track of every serve that a player hits during the tournament. The lower quartile of a particular player's serve speeds was reported to be 98 mph. Which of the following interpretations of this information is correct?

A) 25 of the player's serves were hit at 98 mph.
B) 75 of the player's serves were hit at speeds less than 98 mph.
C) 98 serves traveled faster than the lower quartile.
D) 75 of the player's serves were hit at speeds greater than 98 mph.

Question 2

An alarm company reports that the number of alarms sent to their monitoring center from customers owning their system follow a Poisson distribution with = 4.7 alarms per year. Identify the mean and standard deviation for this distribution.

A) mean = 4.7, standard Deviation = 4.7 B) mean = 2.17, standard Deviation = 4.7
C) mean = 2.17, standard Deviation = 2.17 D) mean = 4.7, standard Deviation = 2.17