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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?
Solutions
milcah answered 2 years agoRelated Solutions
Scores of a standardized test are approximately normally distributed with a mean of 85 and a...
Scores of a standardized test are approximately normally
distributed with a mean of 85 and a standard deviation of
5.5.
(a) What proportion of the scores is above 90?
(b) What is the 25th percentile of the scores?
(c) If a score is 94, what percentile is it on?
Suppose that the scores on a statewide standardized test are normally distributed with a mean of...
Suppose that the scores on a statewide standardized test are
normally distributed with a mean of 75 and a standard deviation of
2. Estimate the percentage of scores that were (a) between 73 and
77. % (b) above 79. % (c) below 73. % (d) between 69 and 79. %
Scores for a common standardized college aptitude test are normally distributed with a mean of 515 and a standard deviation of 113.
Scores for a common standardized college aptitude test are normally distributed with a mean of 515 and a standard deviation of 113. Randomly selected men are given a Test Prepartion Course before taking this test. Assume, for sake of argument, that the test has no effect.A. If 1 of the men is randomly selected, find the probability that his score is at least 584.2.P(X > 584.2) = Round to 4 decimal places.NOTE: Answers obtained using exact z-scores or z-scores rounded to...
Scores for a common standardized college aptitude test are normally distributed with a mean of 481...
Scores for a common standardized college aptitude test are
normally distributed with a mean of 481 and a standard deviation of
108. Randomly selected men are given a Test Prepartion Course
before taking this test. Assume, for sake of argument, that the
test has no effect.
If 1 of the men is randomly selected, find the probability that his
score is at least 537.1.
P(X > 537.1) =
Enter your answer as a number accurate to 4 decimal places. NOTE:...
Scores for a common standardized college aptitude test are normally distributed with a mean of 512...
Scores for a common standardized college aptitude test are
normally distributed with a mean of 512 and a standard deviation of
111. Randomly selected men are given a Test Prepartion Course
before taking this test. Assume, for sake of argument, that the
test has no effect.
If 1 of the men is randomly selected, find the probability that
his score is at least 591.7.
P(X > 591.7) =
Enter your answer as a number accurate to 4 decimal places.
If...
Scores for a common standardized college aptitude test are normally distributed with a mean of 514...
Scores for a common standardized college aptitude test are
normally distributed with a mean of 514 and a standard deviation of
97. Randomly selected men are given a Test Prepartion Course before
taking this test. Assume, for sake of argument, that the test has
no effect.
If 1 of the men is randomly selected, find the probability that his
score is at least 555.2.
P(X > 555.2) =
Enter your answer as a number accurate to 4 decimal places. NOTE:...
Scores for a common standardized college aptitude test are normally distributed with a mean of 496...
Scores for a common standardized college aptitude test are
normally distributed with a mean of 496 and a standard deviation of
101. Randomly selected men are given a Test Prepartion Course
before taking this test. Assume, for sake of argument, that the
test has no effect.
If 1 of the men is randomly selected, find the probability that his
score is at least 547.1.
P(X > 547.1) =
(Enter your answer as a number accurate to 4 decimal places)
If...
A standardized exam's scores are normally distributed. In a recent year, the mean test score was...
A standardized exam's scores are normally distributed. In a
recent year, the mean test score was 21.4 and the standard
deviation was 5.4. The test scores of four students selected at
random are 15, 22, 9, and 36. Find the z-scores that correspond
to each value and determine whether any of the values are
unusual.
The z-score for 15 is:
1) Scores for a common standardized college aptitude test are normally distributed with a mean of...
1) Scores for a common standardized college aptitude test are
normally distributed with a mean of 495 and a standard deviation of
108. Randomly selected men are given a Test Preparation Course
before taking this test. Assume, for sake of argument, that the
preparation course has no effect.
If 1 of the men is randomly selected, find the probability that his
score is at least 551.9.
P(X > 551.9) =
Enter your answer as a number accurate to 4 decimal...
A standardized exam's scores are normally distributed. In a recent year, the mean test score was...
A standardized exam's scores are normally distributed. In a
recent year, the mean test score was 1507 and the standard
deviation was 315. The test scores of four students selected at
random are 1900, 1260, 2220, and 1390. Find the z-scores that
correspond to each value and determine whether any of the values
are unusual. The z-score for 1900 is nothing. (Round to two
decimal places as needed.) The z-score for 1260 is nothing.
(Round to two decimal places as...
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