Question
In: Statistics and Probability
scores on the test are normally distributed with a mean of 76.4 and a standard deviation...
scores on the test are normally distributed with a mean of 76.4 and
a standard deviation of 8.9. round answer nearest whole number.
A. top 90% to 100% of scores
b. scores below the top 90 % and above top 70%
c. scores equal or below 70%and above the bottom 30%
d. scores equal or below 30% snd above bottom 10%
Solutions
orchestra answered 2 years agoRelated Solutions
IQ test scores are normally distributed with a mean of 100 and a standard deviation of...
IQ test scores are normally distributed with a mean of
100 and a standard deviation of 15. An individual's IQ score is
found to be 123.
A.What percentage of individuals will score above
123?
B.What percentage of individuals will score below
123?
c. What percentage of individuals will score between
123 and 100?
d. This individual was trying to be in the 80th
percentile; did they achieve this? how can you tell?
e. what can we say about someone with...
IQ test scores are normally distributed with a mean of 100 and a standard deviation of...
IQ test scores are normally distributed with a mean of 100 and a
standard deviation of 16. Find the probability that a randomly
selected person has an IQ score:
Less than 90.
Between 97 and 118.
Greater than 125.
1500 test scores were normally distributed with a mean of 82 and a standard deviation of...
1500 test scores were
normally distributed with a mean of 82 and a standard deviation of
7.
How many people scored
more than 90?
The scores on a standardized test are normally distributed with a mean of 95 and standard...
The scores on a standardized test are normally distributed with
a mean of 95 and standard deviation of 20. What test score is 0.5
standard deviations above the mean?
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15....
IQ scores are normally distributed with a mean of 100 and a
standard deviation of 15.
A) If one person are randomly selected, find the probability the IQ
score is greater than 112.
B)If one person are randomly selected, find the probability the IQ
score is less than 95.
C)If one person are randomly selected, find the probability the IQ
score is between 97 and 110.
D) If 16 people are randomly selected, find the probability the IQ
score will...
assume that IQ scores are normally distributed with a mean of 100 and a standard deviation...
assume that IQ scores are normally distributed with a
mean of 100 and a standard deviation of 15.
Find the probability that a randomly selected person has
an IQ score less than 115.
Find the probability that a randomly selected person has
an IQ score greater than 118.
Find the probability that a randomly selected person has
an IQ score between 88 and 112.
Assume that IQ scores are normally distributed with a mean of 100 and standard deviation of...
Assume that IQ scores are normally distributed with a mean of
100 and standard deviation of 12. Find the probability that: (a) a
randomly selected person has an IQ score less than 92. (b) a
randomly selected person has an IQ score greater than 108.
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15....
IQ scores are normally distributed with a mean of 100 and a
standard deviation of 15.
a) Find the proportion of the population that has an IQ higher
than 94
b) Find the proportion of the population that has an IQ
between 82 and 88
c) Find the IQ score that seperates the highest scoring 67%
from the rest of the population
Critical Values
Z0.05=
1.645
Z0.025=1.96
Z0.01=2.325
Z0.005=2.575
Assume that IQ scores are normally distributed with a mean of 100 and a standard deviation...
Assume that IQ scores are normally distributed with a mean of
100 and a standard deviation of 15.. If 25 people are randomly
selected, find the probability that their mean IQ score is less
than 103. (a) .1587 (b) .8413 (c) 1.000 (d) .9938 23 Refer to
question 19 above. If 100 people are randomly selected, find the
probability that their mean IQ is greater than 103. (a) .8413 (b)
2.000 (c) .9772 (d) .0228 24 True or False. Because...
A set of exam scores is normally distributed with a mean = 82 and standard deviation...
A set of exam scores is normally distributed with a mean = 82
and standard deviation = 4. 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 .
LicensePoints possible: 3 This is attempt 1 of 3.
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