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enot [183]
4 years ago
12

You earned the following scores on five math test:96 92 80 91 and 86 you want to have an average of at least 90 after you take t

he sixth test.Write and solve an inequality to find the possible score on your sixth test in order to meet your goal
Mathematics
1 answer:
PtichkaEL [24]4 years ago
7 0
(96+92+80+91+86+x)= 90
________________
6

(445+x)=90
_____
6
then you multiply 6 on both sides

445+×=540
-445. -445
x= 95

they need a 95 percent to have an average of a 90%.

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3 years ago
In one statistics course, students reported studying an average (mean) of 9.92 hours a week, with a standard deviation of 4.54.
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For the student who is studying 10 hours a week is in the 57.93th percentile.

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Corresponding z-score for the student who studies 10 hours a week can be calculated by the formula

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