Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was

73.7

Mbps. The complete list of 50 data speeds has a mean of

x=16.48

Mbps and a standard deviation of

s=17.86

Mbps.

a. What is the difference between carrier's highest data speed and the mean of all 50 data speeds?

b. How many standard deviations is that [the difference found in part (a)]?

c. Convert the carrier's highest data speed to a z score.

d. If we consider data speeds that convert to z scores between

2

and 2 to be neither significantly low nor significantly high, is the carrier's highest data speed significant?

a. The difference is

enter your response here

Mbps.(Type an integer or a decimal. Do not round.

)b. The difference is

enter your response here

standard deviations.(Round to two decimal places as needed.)

c. The z score is

z=enter your response here.

(Round to two decimal places as needed.

)d. The carrier's highest data speed is