A. The mean for brand A is higher than the mean for brand B. B. The mean for brand A is the same as the mean for brand B. C. There were more lightbulbs in the dot plot for brand B than in the dot plot for brand A. D. The mean for brand A is lower than the mean for brand B.

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d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

no this is a nonlinear negative