Answer these math questions
NORMAL CURVE
CHAPTER 5
Directions:
Write the answer to each question in the space below.
1. If you go out 1 standard deviation unit on both sides of the mean in a normal distribution, what percentage of the cases will be captured?
2. If you go out 3 standard deviation units on both sides of the mean in a normal distribution, what percentage of the cases will be captured?
3. For X bar = 100.00 and S = 10.00, approximately what percentage of the cases lie between 80.00 and 120.00?
4. For X bar = 55.00 and S = 7.00, between what two values do approximately 95% of the cases lie in a normal distribution?
5. For X bar = 90.00 and S = 15.00. between what two values do 99.7% of the cases lie in a normal distribution?
6. What is the multiplier or the approximate 95% rule?
7. What is the multiplier for the 99.7% rule?
8. For all practice purposes, the normal curve has how many standard deviation units?
______________________________________________
NORMAL CURVE
CHAPTER 5
Directions:
Write the answer to each question in the spa
ce below.
1.
If
yo
u go out 1 standard deviation unit on both side
s of the mean
in a normal dist
ribution, what percentage of the cases will be
c
aptured?
2.
If you go out 3 st
andard deviation units on both sides of the
mean in a norma
l distribution, what percentage of the cases will
be captured?
3.
For X bar
= 100
.00 an
d S = 10.00, approximat
ely what percentage
of the cases lie between 80.00 and 120.00?
4.
For X bar = 55.00 and S = 7.00,
between
what two values do
appr
oximately 95% of the cases lie in a normal distrib
ution?
5.
For X bar = 90.00 and S = 15.00.
between
w
hat two values do
99.7% of the cases lie in a normal dist
rib
ution?
NORMAL CURVE
CHAPTER 5
Directions:
Write the answer to each question in the space below.
1. If you go out 1 standard deviation unit on both sides of the mean
in a normal distribution, what percentage of the cases will be
captured?
2. If you go out 3 standard deviation units on both sides of the
mean in a normal distribution, what percentage of the cases will
be captured?
3. For X bar = 100.00 and S = 10.00, approximately what percentage
of the cases lie between 80.00 and 120.00?
4. For X bar = 55.00 and S = 7.00, between what two values do
approximately 95% of the cases lie in a normal distribution?
5. For X bar = 90.00 and S = 15.00. between what two values do
99.7% of the cases lie in a normal distribution?
