The average height of a certain age group of people is 53 inches and the standard deviation is 4 inches. If the variable is normally distributed, find the probability that a selected individual's will be less than 55 inches.

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !

stethere all not eveanp-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

3/20

step-by-step explanation:

well, there are 20 outcomes, and 3 of them you want. so, 3/20