Question

Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 10. Use the 68-95-99.7 rule to find the following quantities.

a. The percentage of scores less than 100 is __%

b. The percentage of scores greater than 110 is __%

c. The percentage of scores between 80 and 110 is __%

(Round to one decimal place as needed)

Answer #1

Assume that a set of test scores is normally distributed with a
mean of 100 and a standard deviation of 10 . Use the 68-95-99.7
rule to find the following quantities. a. The percentage of scores
less than 110 is %. (Round to one decimal place as needed.) b.
The percentage of scores greater than 110 is nothing %. (Round to
one decimal place as needed.)

Assume that a set of test scores is normally distributed with a
mean of 100 and a standard deviation of 20. Use the 68-95-99.7
rule to find the following quantities. a. The percentage of scores
less than 100 is . (Round to one decimal place as needed.) b. The
percentage of scores greater than 120 . (Round to one decimal
place as needed.) c. The percentage of scores between 60 and 120
is nothing%. (Round to one decimal place as...

Assume that a set of test scores is normally distributed with a
mean of 80 and a standard deviation of 20. Use the 68-95-99.7 rule
to find the following quantities.
The percentage of scores less than 80 is __%
The percentage of scores greater than 100 is _%
The percentage of scores between 40 and 100 is _%
Round to the nearest one decimal

Assume that a set of test scores is normally distributed with a
mean of 80 and a standard deviation of 25. Use the 68-95-99.7 rule
to find the following quantities.
c. The percentage of scores between 30 and 105 is %.?
(Round to one decimal place as needed.)

assume that a set of test scores is normally
distributed with the mean of 110 and a standard deviation of 15.
use the 86-95-99.7 rule

Assume the resting heart rates for a sample of individuals are
normally distributed with a mean of 85 and a standard deviation of
5.
Use the 68-95-99.7 rule to find the following quantities.
a. The relative frequency of rates less than 95 using the
68-95-99.7 rule is nothing.
(Round to three decimal places as needed.)
b. The relative frequency of rates greater than 90 using the
68-95-99.7 rule is nothing.
(Round to three decimal places as needed.)
c. The relative...

A set of exam scores is normally distributed with a mean = 80
and standard deviation = 10.
Use the Empirical Rule to complete the following
sentences.
68% of the scores are between _____ and ______.
95% of the scores are between ______ and _______.
99.7% of the scores are between _______ and ________.
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Suppose a normally distributed set of data has a mean of 193 and
a standard deviation of 13. Use the 68-95-99.7 Rule to determine
the percent of scores in the data set expected to be below a score
of 219. Give your answer as a percent and includeas many decimal
places as the 68-95-99.7 rule dictates. (For example, enter 99.7
instead of 0.997.)

Assume that adults have IQ scores that are normally distributed
with a mean of 100 and a standard deviation of 15. For a randomly
selected adult, find the probability. Round scores to nearest whole
number.
1.) Prob. of IQ less than 85
2.)Prob. of IQ greater than 70
3.) Prob. of randomly selected adult having IQ between 90 and
110.

Scores on the GRE(graduation record examination) are normally
distributed with a mean of 555 and a standard deviation of 135. Use
the 68-95-99.7 Rule to find the oercentage of people taking the
test who score above 690.
The percentage of people taking the test who score above 690
is ___%.

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