You take random sample of 200
200
people from Salinas and find that their average income is...
Mathematics, 13.09.2021 02:00 ejhoff4347
You take random sample of 200
200
people from Salinas and find that their average income is $48,000
$
48
,
000
per year with a standard deviation of $9000
$
9000
. Also assume that population incomes are normally distributed.
Approximately how many people make between $39,000
$
39
,
000
and $57,000
$
57
,
000
?
Answers: 3
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