In which of the following scenarios would the distribution of the sample mean x-bar be normally distributed? Check all that apply.

a. We take repeated random samples of size 10 from a population of unknown shape.

b. We take repeated random samples of size 15 from a population that is normally distributed.

c. We take repeated random samples of size 50 from a population of unknown shape.

d. We take repeated random samples of size 25 from a population that of unknown shape.

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2

step-by-step explanation:

let pq = qr = rs = x, and xz = y and zu = z.

if the horizontal lines are parallel, then corresponding segments are in proportion:

substitute:

therefore 3 = y = z.

xu = y + z → xu = 3 + 3 = 6

i would need to see the shape

step-by-step explanation:

you meant circumference well the answer is:

17.27876 miles

area is 23.7583

the radius is 2.75 miles

hope this hmu if needed.