Answer:
wheres the points
Step-by-step explanation:
Answer:b)0.8577
Step-by-step explanation:
Since the heights of men are normally distributed, we would apply the formula for normal distribution which is expressed as
z = (x - u)/s
Where
x = heights of men
u = mean height
s = standard deviation
From the information given,
u = 69 inches
s = 2.8 inches
We want to find the probability that the mean height of the 100 men is less than 72 inches.. It is expressed as
P(x < 72)
For x = 72
z = (72 - 69)/2.8 = 1.07
Looking at the normal distribution table, the probability corresponding to the z score is 0.8577
P(x < 72) = 0.8577
Sounds as tho you meant:
4n = (2/7)(500)
1000
If that's the case, then 4n = ------------
7
1000 250
or n = ------------ = --------- (answer)
28 7
Check: does 4(250/7) equal (2/7)(500)? YES.
Answer:88
Step-by-step explanation:
