e6lwoodleycker e6lwoodleycker

13-06-2016
Mathematics

Answered

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

Verified Answer :

24-06-2016

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 + 20.7 = 9.4

If 1
the upper limit is 8 + 10.7 = 8.7

If 0
the upper limits is 8+ 00.7 = 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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