Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was 71.9 Mbps. The complete list of 50 data speeds has a mean of x = 16.75 Mbps and a standard deviation of s = 20.69 Mbps. a. What is the difference betweèn 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 az 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?

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Researchers mneasured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was 71.9 Mbps. The complete list of 50 data
speeds has a mean of x = 16.75 Mbps and a standard deviation of s 20.69 Mbps.
a. What is the difference between carrier's highest data speed and the mean of all 50 data speeds?
b. How 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 -
significant?
many
2 and 2 to be neither significantly low nor significantly high, is the carrier's highest data speed
Transcribed Image Text:Researchers mneasured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was 71.9 Mbps. The complete list of 50 data speeds has a mean of x = 16.75 Mbps and a standard deviation of s 20.69 Mbps. a. What is the difference between carrier's highest data speed and the mean of all 50 data speeds? b. How 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 - significant? many 2 and 2 to be neither significantly low nor significantly high, is the carrier's highest data speed
Expert Solution
Z score formula:

The formula for calculation of z – score is shown below

                  z = (x – xbar)/sd

where, x is the random value, 

            x bar is the mean,

            sd is the standard deviation

   

          

          

 

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