Question

Q3: The score of IQ has a normal distribution. Suppose the average IQ score is 110 and the standard deviation is 15. a. What
0 0
Add a comment Improve this question Transcribed image text
Answer #1

sol overage, M = 110 SD = 15 ll + 1.5 SD (a) IQ score = 110 + 1.5 *15 110+ 22.5 = 132.5 132.5 l Porportion of people exceed t

Add a comment
Know the answer?
Add Answer to:
Q3: The score of IQ has a normal distribution. Suppose the average IQ score is 110...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • IQ tests are standardized and follow a normal distribution. On a common IQ test, the mean...

    IQ tests are standardized and follow a normal distribution. On a common IQ test, the mean score is 100 with a standard deviation of 15. a) What is the probability that a randomly selected individual gets a score of 105 or higher? b) What are the mean and standard deviation of the average score of an SRS of 50 people? (Don't forget to justify this) c) What is the probability that the average score of an SRS of 50 people...

  • The average ACT score follows a normal distribution with a mean of 21.1 and a standard...

    The average ACT score follows a normal distribution with a mean of 21.1 and a standard deviation of 5.1 what is the probability that the mean IQ score of 50 randomly selected people will be more than 23 ?

  • 4. The famous IQ test is designed to have a normal distribution, a population mean score...

    4. The famous IQ test is designed to have a normal distribution, a population mean score of 100, and the population standard deviation of 15. If we choose one person at random, what is the probability that this person will have the IQ above 115?

  • The Wechsler Adult Intelligence Scale (WAIS) is a common “IQ test” for adults. The distribution of...

    The Wechsler Adult Intelligence Scale (WAIS) is a common “IQ test” for adults. The distribution of WAIS scores for persons over 16 years of age is approximately normal with mean 100 and standard deviation 15. You wish to determine the probability that a randomly chosen individual has a WAIS score of 105 or higher. To do this, you first need to standardise to a Z-score. You now sample 60 people at random. State whether the following is true or false:...

  • - What proportion of a normal distribution is located between each of the following Z-score boundaries?...

    What proportion of a normal distribution is located between each of the following Z-score boundaries? a. z= -0.50 and z= +0.50 b. z=-0.90 and z= +0.90 c. z=-1.50 and z= 1.50 For a normal distribution with a mean of μ = 80 and a standard deviation of σ= 20, find the proportion of the population corresponding to each of the following. a. Scores greater than 85. b. Scores less than 100. c. Scores between 70 and 90. IQ test scores are standardized to produce a normal distribution with...

  • A typical adult has an average IQ score of 105 with a standard deviation of 20....

    A typical adult has an average IQ score of 105 with a standard deviation of 20. If 20 randomly selected adults are given an IQ test, what is the probability that the sample mean scores will between 102 and 110 points? (Round to 2 decimal places)

  • A typical adult has an average IQ score of 105 with a standard deviation of 20....

    A typical adult has an average IQ score of 105 with a standard deviation of 20. M 20 randomly selected adults are given an IQ test, what is the probability that the sample mean scores will between 102 and 110 points? (Round to 2 decimal places)

  • Find the probability that a person has an IQ greater than 120. Include a sketch of...

    Find the probability that a person has an IQ greater than 120. Include a sketch of the graph and shade the area under the normal curve corresponding to this probability. Mensa is an organization whose members have the top 2% of all IQs. Find the minimum IQ needed to qualify for the Mensa organization. Sketch the graph and shade the area under the curve corresponding to this score and above. IQ scores between 90 and 110 are considered to be...

  • QUESTION 19 A typical adult has an average IQ score of 105 with a standard deviation...

    QUESTION 19 A typical adult has an average IQ score of 105 with a standard deviation of 20. If 20 randomly selected adults are given an IQ test, what is the probability that the sample mean scores will between 102 and 110 points? (Round to 2 decimal places)

  • Suppose a psychologist specializing in learning disorders wanted to estimate the mean IQ score for children...

    Suppose a psychologist specializing in learning disorders wanted to estimate the mean IQ score for children with a particular type of learning disorder. She obtained a random sample of 10 children with this learning disorder and recorded the following IQ scores. 105,96,102,95,91,98,109,122,88,129 IQ scores in the general population are normally distributed with a mean of 100.0 points and a standard deviation of 15.0 points. The psychologist was willing to assume that the distribution of IQ scores for all children with...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT