In a recent study, the Centers for Disease Control and Prevention reported that diastolic blood pressures of adult women in the United States are approximately normally distributed with mean 80.5 and standard deviation 9.9.

For parts (a) and (c), make sure to draw a standard normal curve and shade the appropriate areas.

a) What proportion of women have blood pressures lower than 75?

b) Michelle’s diastolic blood pressure is in the 85th percentile of all adult women. What is her blood pressure?

c) If a group of 25 women is selected, what’s the probability that the mean diastolic blood pressure of these 25 women is lower than 75?

you would need to know all the numbers that are on there

step-by-step explanation:

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584

i think the correct option is the second option.