HomeworkLib
Question

Test scores on a math exam are normally distributed with a mean of 82 and a...

Test scores on a math exam are normally distributed
with a mean of 82 and a standard deviation of 5.5. Using a z-score, find the probability that a
randomly selected student attained these scores

A. at least 84

B. no more than 73

math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

0 0
Add a comment
Know the answer?
Add Answer to:
Test scores on a math exam are normally distributed with a mean of 82 and a...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

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

  • 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?

  • 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.

  • Suppose that scores on a statistics exam are normally distributed with a mean of 77 and...

    Suppose that scores on a statistics exam are normally distributed with a mean of 77 and a standard deviation of 4. Find the probability of a student scoring less than 80 on the exam using the following steps. (a) What region of the normal distribution are you looking to find the area of? (to the left of a zscore, to the right of a z-score, between two z-scores, or to the left of one z-score and to the right of...

  • Scores on a certain test were normally distributed with a mean of 80 and a standard...

    Scores on a certain test were normally distributed with a mean of 80 and a standard deviation of ± 8. The probability is 90% that a randomly selected student will get a score lower than __________________ Give the answer to at least one decimal place.

  • 3. Exam scores on a certain test are distributed normally, with a mean of 72 and...

    3. Exam scores on a certain test are distributed normally, with a mean of 72 and a standard devi- ation of 12. (a) Find the 95th percentile for the exam. (b) Suppose a student who took the exam is selected at random. Find the probability that the student scored between 71 and 73. Draw a graph that illustrates the probability calculated. (C) If you take a simple random sample of 36 students who have taken this exam, what is the...

  • In a recent year, the total scores for a certain standardized test were normally distributed, with a mean of 500 and a standard deviation of 10.4

    In a recent year, the total scores for a certain standardized test were normally distributed, with a mean of 500 and a standard deviation of 10.4. Find the probability that a randomly selected medical student who took the test had a total score that was more than 530. The probability that a randomly selected medical student who took the test had a total score that was more than 530 is _______ 

  • In a recent year, the total scores for a certain standardized test were normally distributed, with a mean of 500 and a standard deviation of 10.6

     In a recent year, the total scores for a certain standardized test were normally distributed, with a mean of 500 and a standard deviation of 10.6. Find the probability that a randomly selected medical student who took the test had a total score that was more than 529. The probability that a randomly selected medical student who took the test had a total score that was more than 529 is _______ 

  • 15) Assume that z scores are normally distributed with a mean of 0 and a standard...

    15) Assume that z scores are normally distributed with a mean of 0 and a standard deviation 15) of 1. If P(z> c) 0.109, find c. olve the problem. 16) 16) Scores on an English test are normally distributed with a mean of 37.4 and a standard deviation of 7.9. Find the score that separates the top 59% from the bottom 41% 17) Suppose that replacement times for washing machines are normally distributed with a 17) mean of 10.9 years...

  • In a recent year, the total scores for a certain standardized test were normally distributed

    In a recent year, the total scores for a certain standardized test were normally distributed, with a mean of 500 and a standard deviation of 10.5.(a) Find the probability that a randomly selected medical student who took the test had a total score that was less than 490 (b) Find the probability that a randomly selected medical student who took the test had a total score that was between 497 and 511(c) Find the probability that a randomly selected medical student...

  • The final exam scores in a business class were normally distributed with a mean of 80.5%...

    The final exam scores in a business class were normally distributed with a mean of 80.5% and a standard deviation of 4. Find the probability that a randomly selected student scored less than 73.9%.

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