Researchers measured the data speeds for a particular smartphone carrier at 50 a

Question

Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was 73.6 Mbps. The complete list of 50 data speeds has a mean of x 18.19 Mbps and a standard deviation of s 35.95 Mbps n carrier's highest data speed and the mean of all 50 data speeds? a. What is the difference 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 carriers highest data speed significant?

Explanation / Answer

As per the Chegg policy, we are advised to do only one question at a time so i am attempting the last image.

In this we need to find P20. The statistical software output for this problem is:

Summary statistics:

Hence,

P20 = 0.65

Column n 20th Per. Data 50 0.65

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