Mathematics, 26.10.2021 23:00 ehsaangaminglegend
An organization tracking college expenses reported that the average cost of textbooks and supplies for students attending four-year public colleges and universities in the 2015-16 academic year is . Suppose a sample of 15 students was selected and the accompanying data reflect the amount they paid for textbooks and supplies during that year.
$1,358 $1,204 $1,207 $1,062
$1,316 $1,38 $1,554 $1,501 $1,421
$1,398 $1,223 $1,382 $1,542 $1,176
Required:
a. Calculate the mean and standard deviation.
b. Determine the number of standard deviations the most extreme cost is away from the mean. If someone were to advise a prospective student concerning the money the student should save to afford the cost of books and supplies for one year for at least 90% of the colleges, determine the amount they would suggest.
Answers: 3
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The coordinates of vortex a’ are (8,4) (-4,2) (4,-,4) the coordinates of vortex b’ are (6,6)(12,-,12)(12,12) the coordinates of vortex c’ are(-2,,12)(4,12)(12,-4)
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An organization tracking college expenses reported that the average cost of textbooks and supplies f...
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