jsph32
09.08.2019 •
Mathematics
Idon't understand!
ten people were chosen at random and surveyed. the survey asked participants for the number of hours they watched tv per day and their ages. letting x represent the number of hours the participant watched tv per day and y represent the participant's age, the surveyor calculated the correlation coefficient between x and y to be 0.24.
interpret the correlation coefficient calculated by choosing the statement below which correctly describes the association between x and y.
a.
strong negative association
b.
weak positive association
c.
strong positive association
d.
weak negative association
Solved
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Ответ:
let every candle holder(small) hold x candle and large y.
=>east side= 10x+4y=52-equation 1
=>west side=2x+4y=36-equation 2
equation 1 - equation 2=10x+4y-(2x+4y)=52-36
=>10x-4y-2x-4y=16
=>8x=16
=>x=16/8=2 candles
therefore, every small candle holder has 2 candles.
for large candle holders' capacity=> 2*2+4y=36
4+4y=36
4y=32
y=32/4=8 candles
Brainliest please