Fifteen randomly selected college students were asked to state thenumber of hours they slept the night before. The resulting data are:6 16 7 8 7 796 3 11 9 15 4 7 9a) Find the mean.b) Find the median.c) Find the standard deviation.d) According to Chebysev's Theorem, at least 75% of the times will fall betweenwhat two amounts? Is the theorem accurate for this set of data? Why of Why not?e) Are any of the reported hours "unusually" high? Are any of the reported hoursunusually low?

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Answered: Fifteen randomly selected college…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Researchers measured the data speeds for a particular smartphone carrier at 50 airports. The highest speed measured was 78.6Mbps. The complete list of 50 data speeds has a mean of x=15.15 Mbps and a standard deviation of s=21.46Mbps. 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−2and 2 to be neither significantly low nor significantly high, is the carrier's highest data speed significant?
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