In a study of 250 adults the average heart rate was 70 bpm assume the population of heart rate is known to be approximately normal with a standard deviation of 12 bpm what does a margin of error of two for the 98% confidence interval of the average beats per minute mean

table 3 represents a direct variation function. : )

x = 2

step-by-step explanation:

if sr parallel to ba then the sides bc and ac are in proportion, that is

= ← substitute values

= ( cross- multiply )

27x = 6(4x + 1)

27x = 24x + 6 ( subtract 24x from both sides )

3x = 6 ( divide both sides by 3 )

x = 2

answer: $13,622.84

step-by-step explanation: check the picture for info and stats : )

to find the perimeter, you add up all the lengths of the sides. in this case you would have to add up 18+22+40+80 which equals 160.