Answer: A. Mean of sampling means 
Standard deviation of sampling means =
B. The probability that your sample has mean less than 165 is 0.1492 .
Given : The distribution of blood cholesterol level in the
population of young men aged 20 to 34 years is close to normal with
mean 
Mg/dl and standard deviation 
mg/dl.
Sample size : n= 150
Let 
sample mean values.
A. The mean and the standard deviation of the distribution of the sampling means would be :
Mean of sampling means =
Standard deviation of sampling means = 
The probability that your sample has mean less than 165 would be
Hence , the probability that your sample has mean less than 165 is 0.1492 .
She has 6 left.
70%= 0.7
0.7 x 20 = how many she has sold (14)
OR
30%=0.3
0.3 x 20= how many she hasn't sold (6)
First, let's find the time where the ship arrives to point C
t=d/V, t= 45/30=1.5h
if the ship's departure time is at 1.5h, on the point C, let 's find its arrival to the point O, V=D/Dt, Dt=tfinal-tinitial
Dt=D/V= 20/30=0.6h=t final -t initial, implies t final=0.6+t initial=0.6+1.5=2.1h
so the ship will be on the radar at 2.1h,
Answer:
3 × (2 + 3 + 5)
Step-by-step explanation:
Answer:
B. (-1,-5)
Step-by-step explanation:
In this graph, the darkest portion represents where the two inequalities intersect with each other. The areas with lighter shading is a solution of one of the inequalities.
From the question we can see that we are looking for which point ends up in the light grey area.
A. (4,-3) White
B. (-1,-5) Light Grey
C. (4,-2) White (This point lies on the inequalities's line. As this line is dotted, the points on it are not included, so this one is white.)
D. (3,1) Dark Grey.
As B is the only one that lies in the light grey area, this is the only correct answer.
