Question
In: Statistics and Probability
on an english exam test are normally distributed with a mean of 68.2 and standard diviation...
on
an english exam test are normally distributed with a mean of 68.2
and standard diviation of 11.7. find the score that seperates 12%
of the score from the other score and seperates top 6% of the score
from the other score?
please use TI-84 to solve
Solutions
orchestra answered 2 years agoRelated Solutions
Suppose that the midterm score of a class is normally distributed with the mean of 68.2...
Suppose that the midterm score of a class is normally
distributed with the mean of 68.2 points and the standard deviation
of 11.3 points. Answer each question.
(5 pts) Sketch the curve of the distribution representing the
midterm score. Make sure to mark the mean and three standard
deviations to either side of the mean.
(10 pts) Find the probability that a randomly selected student
has score at most 65.9
(10 pts) To be in the top 20% of the...
Suppose the test scores for a college entrance exam are normally distributed with a mean of...
Suppose the test scores for a college entrance exam are normally
distributed with a mean of 450 and a s. d. of 100.
a. What is the probability that a student scores between 350 and
550?
b. If the upper 3% scholarship, what score must a student
receive to get a scholarship?
c. Find the 60th percentile of the test scores.
d. Find the middle 30% of the test scores.
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.
A set of exam scores is normally distributed with a mean = 80 and standard deviation...
A set of exam scores is normally distributed with a mean = 80
and standard deviation = 8.
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 .
Get help: Video
2.) Scores on a national exam are normally distributed with a mean 500 and a standard...
2.) Scores on a national exam are normally distributed with a
mean 500 and a standard deviation of 20. Find the score
corresponding to the 70th percentile. use the table or excel.
3.) X is a binomial random variable with parameters n=5 and p=
.5. Use the table to compute the probability indicated. P(x= 3).
Round to four decimal places.
4.) A uniform distribution has a density curve that spans over
the interval [3,7]. what height will the curve have...
There is a test which is normally distributed with a mean of 30 and a standard...
There is a test which is normally distributed with a mean of 30
and a standard deviation of 4. Find the probability that a sample
of 36 scores will have a mean at most 31.5.
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?
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%
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.
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