Inferences & Claims From Statistics
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QUESTION
Calculate the z-score for
x
=
85
x = 85
x
=
85
,
mean
=
80
\text{mean} = 80
mean
=
80
,
SD
=
5
\text{SD} = 5
SD
=
5
.
QUESTION
Calculate the confidence interval: mean = 50, SD = 10, n = 25, 95% CI.
QUESTION
What is the range of the data set: 3, 6, 9, 12, 15?
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ANSWER
The range is 12.
15
−
3
=
12
15 - 3 = 12
15
−
3
=
12
; difference between largest and smallest values.
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