Consider the normal curves that have the parameters = 1.5 and = 3; =

Question:

Consider the normal curves that have the parameters μ = 1.5 and σ = 3; μ = 1.5 and σ = 6.2; μ = −2.7 and σ = 3; μ = 0 and σ = 1.
a. Which curve has the largest spread?
b. Which curves are centered at the same place?
c. Which curves have the same shape?
d. Which curve is centered farthest to the left?
e. Which curve is the standard normal curve?