hausofharris
10.03.2020 •
Mathematics
What is the median of the ages in this stem-and-leaf
plot?
Employees' Ages
0
0
2 2 3 9
31 1 4 6 8
40 3 5 7 8 9
5 3 7 8
6 2 3 5
Key: 43 means 43
Solved
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Ответ:
1. x= 11.7 μ = 7
2. z11.7= 1.3
3. Is 11.7 within a z-score of 3?
a. Yes because z11.7 < 3.
4. Which statement is true of z11.7?
b. z11.7 is between 1 and 2 standard deviations of the mean.