As the standard deviation for Martin Products' distribution increases, the distribution for Martin Products:

a$.$ becomes steeper and more like the distribution for U$.$S$.$ Water

b$.$ does not change

c$.$ becomes flatter and less like the distribution for U$.$S$.$ Water

d$.$ might either become steeper or flatter

$3$

Use the slider to set the standard deviation for Martin Products to be $6\mathrm{.}0.$ The probability of having a rate of return of at least $5\%($move the cursor to $5\mathrm{.}0)$

a$.$ is greater for U$.$S$.$ Water than for Martin Products

b$.$ is the same for both U$.$S$.$ Water and the Martin Products distribution

c$.$ is greater for Martin Products than U$.$S$.$ Water

d$.$ cannot be determined

Use the slider to set the standard deviation for the Martin Products distribution to $8\mathrm{.}0.$ The probability of having a rate of return of at least $10\%($move the vertical line to $10\mathrm{.}0)$

a$.$ is greater for U$.$S$.$ Water than for Martin Products

b$.$ is the same for both U$.$S$.$ Water and the Martin Products distribution

c$.$ is greater for Martin Products than U$.$S$.$ Water

d$.$ cannot be determined