Question

Starting with a population that is normally distributed with a mean of 100 and a standard...

Starting with a population that is normally distributed with a mean of 100 and a standard deviation of 12, answer the following questions (if possible).

  1.          What is the percentage of scores greater than 104?
  2.          What is the probability of randomly selecting a score great than 104?
  3.          What is the percentage of scores less than or equal to 95?
  4.          What is the probability of randomly selecting a score less than or equal to 95?
0 0
Add a comment Improve this question Transcribed image text
Answer #1

A. The percentage of scores greater than 104 is 36.94.
B. The probability of selecting a score greater than 104 is 0.3694.
C. The percentage of scores lesser than or equal to 95 is 36.94.
D. The probability of selecting a score lesser than or equal to 95 is 0.3694.

Add a comment
Know the answer?
Add Answer to:
Starting with a population that is normally distributed with a mean of 100 and a standard...
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
  • 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...

  • IV. Assume that IQ scores are normally distributed, with a mean of 100 and standard deviation...

    IV. Assume that IQ scores are normally distributed, with a mean of 100 and standard deviation of 15. What is the probability that a randomly selected person has an IQ score a greater than 120? b. less than 902 c. between 90 and 120? d. between 105 and 120?

  • The IQ scores of adults are normally distributed with a mean of 100 and a standard...

    The IQ scores of adults are normally distributed with a mean of 100 and a standard deviation of 15. What is the probability that the mean IQ score in a random sample of 50 adults will be more than 95?

  • 1. For a normally distributed population with a mean of and a standard deviation of a....

    1. For a normally distributed population with a mean of and a standard deviation of a. Draw the bell curve going out three standard deviations on both directions. b. Find the Z-score for    c. Find the Z-score for    d. Find the Z-score for    e. Find the probability of getting a score greater than 21,    f. Find the probability of getting a score less than 9,    g. Find the probability of getting a score between 13...

  • The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $14

    The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $14. Find the probability that a randomly selected utility bill is (a) less than $65, (b) between $87 and $100, and (c) more than $110. (a) The probability that a randomly selected utility bill is less than $65 is _______ (Round to four decimal places as needed.) Use the normal distribution to the right to answer the questions. (a) What percent of the...

  • Intelligence quotient (IQ) scores are often reported to be normally distributed with a mean of 100...

    Intelligence quotient (IQ) scores are often reported to be normally distributed with a mean of 100 and a standard deviation of 15. (a) If a random sample of 50 people is taken, what is the probability that their mean IQ score will be less than 95? (b) If a random sample of 50 people is taken, what is the probability that their mean IQ score will be more than 95? (c) If a random sample of 50 people is taken,...

  • 1. IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. a. What ...

    all questions. Do not round answers 1. IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. a. What percentage of scores is between 55 and i 15? b. In a group of 20,000 randomly selected individuals, how many have an IQ score of 130 or more? 2. A Honda Civic has its gas mileage (in miles per gallon, or mpg) normally distributed, with a mean of 33 mpg and a standard deviation of...

  • Assume math scores on the SAT are normally distributed with a mean of 500 and a standard deviation of 100.

    Assume math scores on the SAT are normally distributed with a mean of 500 and a standard deviation of 100. a. What is the probability that one randomly selected individual taking the sat will have a Math score of more than 530? b. What is the probability that one randomly selected individual taking the SAT will have a Math score between 450 and 600?c. Find the 60th percentile of these scores.

  • 5. Assume the readings on thermometers are normally distributed with a mean of 0°C and a...

    5. Assume the readings on thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. Find the probability that a randomly selected thermometer reads between −2.26 and −1.53 and draw a sketch of the region. 6. Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the probability of a bone...

  • Assume that a set of test scores is normally distributed with a mean of 100 100...

    Assume that a set of test scores is normally distributed with a mean of 100 100 and a standard deviation of 15 15. Use the​ 68-95-99.7 rule to find the following quantities. a. The percentage of scores less than 100 is 50​%. ​(Round to one decimal place as​ needed.) b. The percentage of scores greater than 115​%. ___ ​(Round to one decimal place as​ needed.) c. The percentage of scores between 70 and 115​%. ___ ​(Round to one decimal place...

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
ADVERTISEMENT