Fuel prices in Vancouver one month had a mean price of C$1.34 per liter. Suppose that we take random samples of 45 prices from this population and calculate the sample mean price for each sample. We can assume that the prices in each sample are independent.

What will be the shape of the sampling distribution of the sample mean price?

Approximately Normal

Step-by-step explanation:

Even though we don't know the shape of the population distribution of prices, the sampling distribution of the sample mean will be approximately normal since the sample size is large (n=45≥30).

4

step-by-step explanation:

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3