Repeat the preceding exercise using the Verizon data speed of 0.8 Mbps at Philadelphia International Airport (PHL).
Preceding Exercise
a. What is the difference between Verizon's data speed at Atlanta's international airport and the mean of all of Verizon's data speeds?
b. How many standard deviations is that [the difference found in part (a)]?
c. Convert Verizon's data speed at Atlanta's international airport 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 Verizon's speed at Atlanta significant?
Express all z scores with two decimal places.