3x : 2 = 15
3x = 15 * 2
3x = 30
x = 30 : 3
x = 10
--------------------------------
3(10) :2 = 15
Answer:
Step-by-step expla
la respuesta esnation:
1.77245.
Step-by-step explanation:
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true
a) Approximately .
b) Approximately .
c) Approximately .
d) Approximately .
e) Approximately .
f) Approximately .
The -score of a measurement gives the number of standard deviations between that measurement and the mean of the dataset.
For example, for this dataset, it is given that whereas . For a -year-old viewer, .
How far away is this observation from the mean of this population? .
The -score of this observation would be the approximate number of standard deviations that corresponds to this difference:
.
Similarly:
For , .
Separately adding and subtracting from would give the upper bound and the lower bound of the age range within standard deviation from the mean:
Similarly, for the interval within standard deviations from the mean:
For the interval within standard deviations from the mean: