Here again is the histogram showing the distribution of times, in minutes, required for 25 rats in an animal behavior experiment to navigate a maze successfully. The histogram has 8 intervals, each with a width 1 minute and with midpoints at 2, 3, 4 ... and 9 minutes. The frequencies are 3, 8, 6, 4, 2, 1, 0 and 1.

For the data described by the above histogram,

step-by-step explanation:

in which figure is point g a centroid

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step-by-step explanation:

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x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752