8. One normal curve has mean 19 and standard deviation 5, a second normal curve

Question

8.
One normal curve has mean 19 and standard deviation 5, a second
normal curve has mean 2 and standard deviation 8. The curvethat
is more dispersed, or spread out, is
a.They are equally spread out
b.The first normal curve
c.The second normal curve
d.There is insufficient information to answer the question

9.
Which of the following properties does not apply to a
theoretical normal distribution?
a. The mean, median, and mode are equal.
b. The curve never touches the x-axis.
c. The normal distribution is bimodal.
d. The normal distribution is bell-shaped.

10.
For a normal curve with mean 7 and standard deviation 4, whichof
the following parts of the normal curve will have an area of
approximately 68%?
from 5 to 9
from 3 to 11
from 7 to 15
from -1 to 15

11.
Stating that the area under the curve between z=0 and z=100 is
0.3413 is the same as stating that the __________ of selecting anyz
value between 0 and 1.00 is 0.3413.

Explanation / Answer

8=c: This is because the standard deviation is higher 10=from 3 to 11: This is because 68% is between one standarddeviation away from the mean so the mean ± standarddeviation 11=probability: Just the correct word to use. Hope that helps!

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