Given a mean of 8 and a standard deviation of 0.7, within how many standard deviations of the mean do the values 7.7, 8.4, 9, 8,
and 6.9 fall?
2
1
0
3
1 answer:
*We can to find the upper limit of the data by using the values given in the options.
If 2
the upper limit is 8 + 2*0.7 = 9.4
If 1
the upper limit is 8 + 1*0.7 = 8.7
If 0
the upper limits is 8+ 0*0.7 = 8
If 3
the upper limit is 8 + 3*0.7 = 10.1
Therefore, the answer is
3
since all the values are included
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