Select all the properties that must be true of a normal distribution. a
The distribution is bell-shaped.
b
The distribution is determined by the mean and standard deviation.
c
The distribution has a height of zero when it is more than 3 standard deviations away from the center.
d
The distribution is centered at the mean absolute deviation.
e
The total area under the normal distribution curve is 1.
f
The area under the normal distribution curve and within 2 standard deviations of the center is about 95% of the total area under the curve.

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step-by-step explanation:

80%

step-by-step explanation:

this is a very good question

step-by-step explanation:

i got a hair cut today from my mom not to flex just to flex kim jon un is one rad fellow i'd say you'd need to take the hairline in kinda like a box shape like someone rammed a lego brick into your head. from there you really need to take the top up keeping with that boxy aesthetic, finally coat the whole thing with gel if your country economics are failing or whatever you can just coat it with the starving children's food rations. about 5 orphans per strand is a good ratio. good luck with the fresh cut my dude

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6