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Mekhanik [1.2K]
3 years ago
9

One-third of 2c subtracted from five times nine

Mathematics
1 answer:
SOVA2 [1]3 years ago
4 0
<span>One-third of 2c subtracted from five times nine
1/3 of 2c subtracted 5 x nine
1/3 x 2c - 5(9)
=1/3 x 2c - 45
=2c/3 - 45
if we solve for c,
2c/3 = 45
2c = 45 x 3
2c = 135
c = 135/2 
c = 67.5</span>
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b) For this case the data is skewed to the left and we can't assume that we have the normality assumption.

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For this case we have the following data:

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We can use the following R code to get the histogram

> x1<-c(7,13.2,8.1,8.2,6,9.5,9.4,8.7,9.8,10.9,8.4,7.4,8.4,10,9.7,8.6,12.4,10.7,11,9.4)

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The result is on the first figure attached.

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> x2<- c(2.5,1.8,2.6,-1.9,1.6,2.6,1.4,0.9,1.2,2.3,-1.5,1.5,2.5,2.9,-0.1)

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The result is on the first figure attached.

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The result is on the first figure attached.

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