Mathematics, 14.01.2020 12:31, anonymousanon
High school students from grades 9-10 and 11-12 were asked to choose the kind of band to have play at a school dance: rap, rock, or country.
their choices were as follows:
grades 9-10—rap: 40; rock: 30; country: 55
grades 11-12—rap: 60; rock: 25; country: 35
which of the following is a correct two-way frequency table for the data?
a)
band preference for school dance
rap rock country row totals
grades 9-10 0.28 0.21 0.38 0.86
grades 11-12 0.41 0.17 0.24 0.83
column totals 0.69 0.38 0.62 1
b)
band preference for school dance
rap rock country row totals
grades 9-10 0.40 0.55 0.61 0.86
grades 11-12 0.60 0.45 0.39 0.83
column totals 1 1 1 1
c)
band preference for school dance
rap rock country row totals
grades 9-10 40 30 55 125
grades 11-12 60 25 35 120
column totals 100 55 90 245
d)
band preference for school dance
rap rock country row totals
grades 9-10 0.32 0.24 0.44 1
grades 11-12 0.50 0.21 0.29 1
column totals 0.69 0.38 0.62 1
Answers: 1
Mathematics, 21.06.2019 16:30, lbelle
A, b, c, and d have the coordinates (-8, 1), (-2, 4), (-3, -1), and (-6, 5), respectively. which sentence about the points is true? a. a, b, c, and d lie on the same line. b. and are perpendicular lines. c. and are parallel lines. d. and are intersecting lines but are not perpendicular. e. and are parallel lines.
Answers: 1
Mathematics, 21.06.2019 19:00, love123jones
Explain why the factor 1.5 is broke. into two numbers in the model.
Answers: 3
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