f 4 adult females are randomly selected, find the probability that they have pulse rates with a mean less than 81 beats per minute.

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

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 !

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.

to be honest i don't know but i need points so