Question 1
The calculator screens summarize a data set.
a.
Identify the mean and the sample standard deviation. Round to one place after the decimal, where
necessary.
b.
Find the interval that corresponds to measurements within two standard deviations of the mean.
Question 2
At the U.S. Open Tennis Championship a statistician keeps track of every serve that a player hits during the tournament. The statistician reported that the mean serve speed was 100 miles per hour (mph) and the standard deviation of the serve speeds was 15 mph. Assume that the statistician also gave us the information that the distribution of serve speeds was mound-shaped and symmetric. What percentage of the player's serves were between 115 mph and 145 mph?
◦ at most 34%
◦ at most 2.5%
◦ at most 13.5%
◦ approximately 16%
Left coronary artery (only seen if auricle is open)
OPEN GLOVING 5
School aged chess player
Henrik, a Canadian hockey player, agreed to a contract where he was to receive S30,OOO 00 in 3 ...
Lawn tennis
Lawn tennis racket