Question

Assume the average age of an MBA student is 29.1 years old with a standard deviation of 2.6 years.

a) Determine the coefficient of variation.

b) Calculate the z-score for an MBA student who is 24 years old.

c) Using the empirical rule, determine the range of ages that will include 99.7% of the students around the mean.

d) Using Chebyshev's Theorem, determine the range of ages that will include at least 96% of the students around the mean. e) Using Chebyshev's Theorem, determine the range of ages that will include at least 83% of the students around the mean.

Answer #1

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Assume the average age of an MBA student is 31.7 years old with
a standard deviation of 2.6 years.
a) Determine the coefficient of variation.
b) Calculate the z-score for an MBA student who is 26 years
old.
c) Using the empirical rule, determine the range of ages that
will include 95% of the students around the mean.
d) Using Chebyshev's Theorem, determine the range of ages that
will include at least 92% of the students around the mean.
e)...

The University of Pennsylvania
randomly decided to assess its student population as they prepared
for an audit by the federal government. In the Liberal
Arts division, they found that the average age was 31.6years old
with a standard deviation of 2.8 years.
a.
Determine the coefficient of variation.
b. Calculate the z-score
for a Liberal Arts student who is 28 years old.
c. Use the Empirical Rule
to identify the range in ages that will include 997% of the
students around the mean....

5. The University of
Pennsylvania randomly decided to assess its student population as
they prepared for an audit by the federal government. In
the Liberal Arts division, they found that the average age was
31.6years old with a standard deviation of 2.8 years.
a.
Determine the coefficient of variation.
b. Calculate the z-score
for a Liberal Arts student who is 28 years old.
c. Use the Empirical Rule
to identify the range in ages that will include 997% of the
students around the mean....

Assume the average selling price for houses in a certain county
is
$315 comma 000
with a standard deviation of
$41 comma 000
.
a) Determine the coefficient of variation.
b) Caculate the z-score for a house that sells for
$297 comma 000
.
c) Using the Empirical Rule, determine the range of prices
that includes
99.7
%
of the homes around the mean.
d) Using Chebychev's Theorem, determine the range of prices
that includes at least
83
%
of...

Assume the average selling price for houses in a certain county
is $321000 with a standard deviation of $34000.
a) Determine the coefficient of variation.
b) Caculate the z-score for a house that sells for $358000.
c) Using the Empirical Rule, determine the range of prices that
includes 68% of the homes around the mean.
d) Using Chebychev's Theorem, determine the range of prices
that includes at least 93% of the homes around the mean.

Assume the average selling price for houses in a certain county
is $329,000 with a standard deviation of $26,000
a) Determine the coefficient of variation.
b) Calculate the z-score for a house that sells for
$295,000
c) Using the Empirical Rule, determine the range of prices that
includes 95% of the homes around the mean.
d). Using Chebychev's Theorem, determine the range of prices
that includes at least 88% of the homes around the mean.
This is where you solve....

Suppose that the Average student is 20.6 years with a standard
deviation of 1.7 years. Suppose we obtain a simple random sample of
100 students ages.
1) What is the expected sample average age?
2) What is the standard deviation of the sample average?
3) Find the probability that the sample average is at least 21.3
years.

In a certain country, the average age is 31 years old and the
standard deviation is 4 years. If we select a simple random sample
of 100 people from this country, what is the probability that the
average age of our sample is at least 32?
0.006
0.599
0.401
0.994

Consider a sample with data values of 27, 25, 23, 16, 30, 33,
28, and 25. Compute the 20th ,25th ,65th ,75th percentiles (to 2
decimal, if decimals are necessary).
20th percentile
25th percentile
65th percentile
75th percentile
Consider a sample with data values of 26, 25, 23, 15, 30, 36,
29, and 25. Compute the range, interquartile range, variance, and
standard deviation (Round to 2 decimals, if necessary).
Range
Interquartile range
Variance
Standard deviation
Consider a sample with a...

8. In a
statistics class, the average grade on the final examination was 75
with a standard deviation of 5.
a.
Use Chebyshev’s theorem to answer: At least what percentage of
the students received grades between 50 and 100?
b.
What is the z-score for a student who had an examination score
of 91?
c. Would the test score from part b., be
considered an outlier? Explain.
9. Assume we have a symmetric or bell shaped distribution. Using...

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