D = 0.32
d - 8 / 5 = -4d
d - 1.6 = -4d
d + 4d = 1.6
5d = 1.6
d = 0.32
This is an exact question in my math textbook. It should be correct.
The inverse of

is

. (This eliminates B and D)

translates to "if

, then

". This means the answer must be A.
Answer:
The sampling distribution of
is <em>N</em> (0.25, 0.0354²).
Step-by-step explanation:
According to the Central limit theorem, if from an unknown population large samples of sizes <em>n</em> > 30, are selected and the sample proportion for each sample is computed then the sampling distribution of sample proportion follows a Normal distribution.
The mean of this sampling distribution of sample proportion is:

The standard deviation of this sampling distribution of sample proportion is:

Let <em>p</em> = proportion of adults in the city having credit card debts of more than $2000.
It is provided that the proportion of adults in the city having credit card debts of more than $2000 is, <em>p</em> = 0.25.
A random sample of size <em>n</em> = 150 is selected from the city.
Since <em>n</em> = 150 > 30 the Central limit theorem can be used to approximate the distribution of <em>p</em> by the Normal distribution.
The mean is:

The standard deviation is:

Thus, the sampling distribution of
is <em>N</em> (0.25, 0.0354²).
Answer:
f(x) = (-4/5)*x + 4
Step-by-step explanation:
The line which passes through these points will decrease y by 12 for every x increase of 15. This is the same as decreasing y by 4 for every x increase of 5. This means the slope (rise over run) is -4/5. If this is applied to the first point to find what y is at 0, then the point (0, 4) is on the line.
This means that f(x) = (-4/5)*x + 4