A test has been designed so that scores are normally distributed with a mean of 100...
A test has been designed so that scores are normally distributed with a mean of 100 and a standard deviation of 15. If a test taker is chosen at random, find the probability that their score on the test will be:
less than 76
greater than 137
between 90 and 110
If you want to target test takers who score in the top 7% on the test, you should look for test takers whose score is above what value?
Homework Answers
Add Answer to:
A test has been designed so that scores are normally distributed
with a mean of 100...
The Law School Admission Test (LSAT) is designed so that test scores are normally distributed. The...
The Law School Admission Test (LSAT) is designed so that test scores are normally distributed. The mean LSAT score for the population of all test-takers in 2005 was 154.35, with a standard deviation of 5.62. If you drew all possible random samples of size 100 from the population of LSAT test-takers and plotted the values of the mean from each sample, the resulting distribution would be the sampling distribution of the mean. Based on Centeral Limit Theorium, What is the...
1. If bone density test scores are normally distributed with a mean of 0 and a...
1. If bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1, what fraction of bone density scores are greater than 1.3? a.) .108 b.) .221 c.) .070 d.) .097 2.) Assume bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. If a bone density score is chosen at random, what is the probability that it is greater than 1.3? a.) .070 b.)...
The Law School Admission Test (LSAT) is designed so that test scores are normally distributed. The...
The Law School Admission Test (LSAT) is designed so that test scores are normally distributed. The mean LSAT score for the population of all test-takers in 2005 was 154.35, with a standard deviation of 5.62. Calculate the value of the standard error of the mean for the sampling distribution for 100 samples.
LSAT test scores are normally distributed with a mean of 157 and a standard deviation of...
LSAT test scores are normally distributed with a mean of 157 and a standard deviation of 6. Find the probability that a randomly chosen test-taker will score 151 or lower. (Round your answer to four decimal places.)
A test of depth perception is designed so that scores are normally distributed with a mean...
A test of depth perception is designed so that scores are normally distributed with a mean of 50 and a standard deviation of 10. Use the 68-95-99.7 rule to find the following values. A) Percentage of scores less than 50 _____ B) Percentage of scores less than 60 _____ C) Percentage of scores greater than 70 _____ D) Percentage of scores greater than 40 _____ ***If you can explain step by step how to figure this out...
2. Given a test that is normally distributed with a mean of 100 and a standard...
2. Given a test that is normally distributed with a mean of 100 and a standard deviation of 12, find: (a) the probability that a single score drawn at random will be greater than 110 (relevant section) (b) the probability that a sample of 25 scores will have a mean greater than 105 (relevant section) (c) the probability that a sample of 64 scores will have a mean greater than 105 (relevant section) (d) the probability that the mean of...
r Intelligence Scale The Wechsler Intelligence Scale or Children is approximately normally distributed, with mean for...
r Intelligence Scale The Wechsler Intelligence Scale or Children is approximately normally distributed, with mean for 100 and standard deviation 15, a) What is the probability that a randomly selected test taker gra 15 the bel (b) What is the probability that a randomly selected test taker is e What proportion of test takers will score between 110 0 If a child is randomly selected, what is the probability that e What intelligence score will place a child in the...
Suppose scores on an IQ test are normally distributed
Suppose scores on an IQ test are normally distributed. If the test has a mean of 100 and a standard deviation of 10, what is the probability that a person who takes the test will score between 90 and 110?
Suppose IQ scores are normally distributed with mean 100 and standard deviation 10. Which of the...
Suppose IQ scores are normally distributed with mean 100 and standard deviation 10. Which of the following is false? Group of answer choices A normal probability plot of IQ scores of a random sample of 1,000 people should show a straight line. Roughly 68% of people have IQ scores between 90 and 110. An IQ score of 80 is more unusual than an IQ score of 120. An IQ score greater than 130 is highly unlikely, but not impossible.
7. Scores on a recent national Mathematics exam were normally distributed with a mean of 82...
7. Scores on a recent national Mathematics exam were normally distributed with a mean of 82 and a standard deviation of 7. A. What is the probability that a randomly selected exam score is less than 70 B. What is the probability that a randomly selected exam score is greater than 90? C. If the top 2.5% of test scores receive Merit awards, what is the lowest score necessary to receive a merit award?
2. Given a test that is normally distributed with a mean of 100 and a standard deviation of 12, find: (a) the probability that a single score drawn at random will be greater than 110 (relevant section) (b) the probability that a sample of 25 scores will have a mean greater than 105 (relevant section) (c) the probability that a sample of 64 scores will have a mean greater than 105 (relevant section) (d) the probability that the mean of...
r Intelligence Scale The Wechsler Intelligence Scale or Children is approximately normally distributed, with mean for 100 and standard deviation 15, a) What is the probability that a randomly selected test taker gra 15 the bel (b) What is the probability that a randomly selected test taker is e What proportion of test takers will score between 110 0 If a child is randomly selected, what is the probability that e What intelligence score will place a child in the...
Most questions answered within 3 hours.
-
What happens to the distribution of gene alleles when a
reproductive isolation arises between different population...
asked 2 minutes ago -
A 50.0-kg child takes a ride on a Ferris wheel that rotates four
times each minute...
asked 3 minutes ago -
1 – Balance the following
Bi(OH)3 + SnO22- →
SnO32- +
Bi
asked 14 minutes ago -
Explain what we mean by "The electric field at the point marked
X is 10 N/C."...
asked 26 minutes ago -
What is the positive energy states in Dirac’s picture? It says
that it leaves an empty...
asked 24 minutes ago -
A mutual fund manager has a $20 million portfolio with a beta of
1.7. The risk-free...
asked 24 minutes ago -
Given the following contribution margin income statement
Sales (15000 units 35
$/units)
asked 24 minutes ago -
The heights in feet of some of the girls of SEU
are: 5.8, 6.1, 5.9, 5.4, 5.6,...
asked 56 minutes ago -
Caspian Sea Drinks is considering the purchase of a new water
filtration system produced by Rube...
asked 1 hour ago -
Compare and contrast the
social media of Pepsi and Coke? which one is most effective and...
asked 1 hour ago -
1.
Who initiates a lockout?
Group of answer choices
management
employees
unions
arbitrators
asked 1 hour ago -
Many celebrities and public figures have Twitter accounts with
large numbers of followers. However, some of...
asked 1 hour ago