Another way to word this ( if it helps)
The product of 15 and k is 45
So 15 times k equals 45
15k=45
This would be the equation- if we need to solve it
Divide both sides of the equation by 15 to isolate k
k=3
Answer:
The percentage of samples of 4 fish will have sample means between 3.0 and 4.0 pounds is 66.87%
Step-by-step explanation:
For a normal random variable with mean Mu = 3.2 and standard deviation sd = 0.8 there is a distribution of the sample mean (MX) for samples of size 4, given by:
Z = (MX - Mu) / sqrt (sd ^ 2 / n) = (MX - 3.2) / sqrt (0.64 / 4) = (MX - 3.2) / 0.4
For a sample mean of 3.0, Z = (3 - 3.2) / 0.4 = -0.5
For a sample mean of 3.0, Z = (4 - 3.2) / 0.4 = 2.0
P (3.2 <MX <4) = P (-0.5 < Z <2.0) = 0.6687.
The percentage of samples of 4 fish will have sample means between 3.0 and 4.0 pounds is 66.87%
Now, notice the picture below
is really just one rectangle and a circle, well, half a circle or a semi-circle
so.... if you get the area of the whole rectangle, 16*19
and subtract, the area of half the circle, you end up with the shaded area
since, what you'd be leftover is, the rectangle, with a semi-circular hole, that was subtracted
now... let's say, you get an amount of hmmm [?]
ok, how much is that in percentage? well, 16*19 is 304
so, if we take 304 as the 100%, how much is [?] in percentage?
solve for "x"
Black is black.
Blue is blue.
Red is red.