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,

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34.5 cm

step-by-step explanation:

generally for a circular segment of angle, θ° and radius r

arc length

= (θ/360) x circumference

= (θ/360) x 2πr

in our case, θ = 60°, π=3.142 and r = 33 cm

substitute into above formula

arc length

= (60/360) x 2(3.142)( 33) = 34.5 cm

180-142=38 for the acute angle next to the entry

90+38=128

180-128=52

a=52

step-by-step explanation:

step-by-step explanation: