SOLUTION:
another question here:
Recent study of cardivascular risk factor reports that 30% of Adults meet the criteria for Hypertension if 15 Adults are assessed. What is the probabili
Algebra ->
Probability-and-statistics
-> SOLUTION:
another question here:
Recent study of cardivascular risk factor reports that 30% of Adults meet the criteria for Hypertension if 15 Adults are assessed. What is the probabili
Log On
Question 304668:
another question here:
Recent study of cardivascular risk factor reports that 30% of Adults meet the criteria for Hypertension if 15 Adults are assessed. What is the probability that:
A. exactly 5 meet the criteria for Hypertension?
b. None meet the criteria for Hypertension?
c. Less than or egqal to 7 meet the criteria for Hypertension?
You can put this solution on YOUR website! Among coffee drink men drink a mean of 3.2 cups per day w/a standard devivation of 0.8 cups.
assume the number of coffee drink per day follow normal distribution
a. what is proportion drink 2 cups per day or more?
Find the z-value of 2
z(2) = (2-3.2)/0.8 = -1.5
---
P(x >=-2) = P(z >=-1.5) = 0.9332
---------------------------------------------
b. what is proportion drink no more than 4 cups per day?
Find the z-value of 4
z(4) = (4-3.2)/0.8 = 1
---
P(x<4) = P(z<1) = 0.8413
---------------------------------------------
c. if the top 5% of coffee drinkers are considered heavy coffee drinkers, what is the minimum number of cups consumed by a heavy coffee drinker?
---
Find the z-value that has a 5% right tail.
z = 1.645
----
Find # of cups corresponding to that z-value:
x = zs+u
x = 1.645*0.8+3.2
x = 4.52 cups
========================
Cheers,
Stan H.
========================
(
