Question
In: Statistics and Probability
We are nt allowed ro use z score, we must use a bell curve to find...
We are nt allowed ro use z score, we must use a bell curve to find these.
The age of members of seniors curling club are normally distributed, with mean of 63 years and a standard deviation of 4 years. What percent if the curlers in each of the following age groups?
A) between 55 and 63 years old
PLEASE SHOW ALL WORK, I AM LOST
Solutions
Expert Solution
Here it is given that distribution is normal with mean=63 and standard deviation=4
A. Now we need to find 
As distribution is normal we can convert x to z
We will use below table to find required probability
orchestra answered 1 year agoRelated Solutions
What is a bell curve and normal score ?
What is a bell curve and normal score ?
Use a table of cumulative areas under the normal curve to find the z-score that corresponds...
Use a table of cumulative areas under the normal curve to find
the z-score that corresponds to the given cumulative area. If the
area is not in the table, use the entry closest to the area. If
the area is halfway between two entries, use the z-score halfway
between the corresponding z-scores. If convenient, use technology
to find the z-score. 0.05
The cumulative area corresponds to the z-score of ?. (Round to
three decimal places as needed.)
Use a table of cumulative areas under the normal curve to find the z-score that corresponds...
Use a table of cumulative areas under the normal curve to find
the z-score that corresponds to the given cumulative area. If the
area is not in the table, use the entry closest to the area. If
the area is halfway between two entries, use the z-score halfway
between the corresponding z-scores. If convenient, use technology
to find the z-score.
.048
Use a table of cumulative areas under the normal curve to find the z-score that corresponds...
Use a table of cumulative areas under the normal curve to find
the z-score that corresponds to the given cumulative area. If the
area is not in the table, use the entry closest to the area. If
the area is halfway between two entries, use the z-score halfway
between the corresponding z-scores. If convenient, use technology
to find the z-score.
0.054
2. Find the z -score such that the area under the normal curve on the left...
2. Find the z -score such that the area under the
normal curve on the left side of Z is 0.2264
The values of z-score are given. A) Find the area under the normal curve to the...
The values of z-score are given.
A) Find the area under the normal curve to the right of
z = -0.84. Round the answer to four decimal places.
B) Find the area under the normal curve between
z = 0.43 and z = 1.33. Round the answer to four
decimal places.
C) Find the area under the normal curve between
z = -0.32 and z = 0.92. Round the answer to four
decimal places.
D) Find the area under the...
Find the z-score such that the area under the standard normal curve to the left is...
Find the z-score such that the area under the standard normal
curve to the left is 0.61.
________is the z-score such that the area under the curve to
the left is 0.61.
(Round to two decimal places as needed.)
Find the z-score such that the area under the standard normal curve to the left is...
Find the z-score such that the area under the standard normal
curve to the left is 0.32
. Find the z-score for Kohl’s for Profit Margin. Also, find the z-score for Kohl’s for...
. Find the z-score for Kohl’s for Profit Margin. Also, find the
z-score for Kohl’s for Price/Sales. Describe, in a few sentences,
the meaning of these z-scores.
Profit Margin
(cents per $1 sales)
7
2
1
11
6
3
4
-9
3
2
3
2
-2
10
2
-2
2
5
-3
2
1
6
-3
-1
5
3
4
5
4
7
3
1
4
-16
-1
-4
8
6
2
4
7
1
4
Price to Sales
(ratio)...
Find the indicated z-score shown in the graph to the right. AREA= 0.0274 The z-score is...
Find the indicated z-score shown in the graph to the right.
AREA= 0.0274
The z-score is _____. (Round to two decimal places as
needed.)
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