To test if an observed frequency distribution with five classes is normally distributed, we need to . Select one: a. Compute an F-statistic b. Calculate a t-statistic c. Convert the class marks to standard normal z-statistics d. Convert the class limits to standard normal z-statistics

the workers who do no drive has no reasonable reason to buy gasoline due to they don't have anything to use it for

x + 4/7

step-by-step explanation:

use cymath

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it