ZuoTi.Pro
Question

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 mYgiOvhNvhgAAAABJRU5ErkJggg== and a standard deviation of 9T1AFVjQPolP+rzAAAAABJRU5ErkJggg==

a. Draw the bell curve going out three standard deviations on both directions.

http://www.tushar-mehta.com/excel/charts/normal_distribution/images/normal2.gif

b. Find the Z-score for GqYQAAAAAElFTkSuQmCC  

c. Find the Z-score for nuMCO7uwBsj3w4nkAAAAAElFTkSuQmCC  

d. Find the Z-score for p9UNvADQkQdTXeATrAAAAABJRU5ErkJggg==  

e. Find the probability of getting a score greater than 21, CyHNEQZ0ByMToxJ+u19eb5KEMVZtIBeeBOiUUx1t  

f. Find the probability of getting a score less than 9, U0Xqt6SvP2BWcsYA7Wf9hA7AAAAABJRU5ErkJggg  

g. Find the probability of getting a score between 13 and 26, AAAAABJRU5ErkJggg==  

h. Find the raw score that will separate out the bottom 80% of scores.

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

s to S 2b 25 30 3 Z-x-ム 18-20 - 0-440 Cd Given x 31 ten Z:32-20 0.40 , lo , 420千 0-0139 P 13-20 p (-1.40 <乙< 1.10 Ca) P( 13 X 26 O. 8 8 4 9-O-O808 : o.8o11 Z-score to loRl 0 841

0 0
Add a comment
Know the answer?
Add Answer to:
1. For a normally distributed population with a mean of and a standard deviation of 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

  • 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).          What is the percentage of scores greater than 104?          What is the probability of randomly selecting a score great than 104?          What is the percentage of scores less than or equal to 95?          What is the probability of randomly selecting a score less than or equal to 95?

  • 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...

  • The weights of 9 year old male children are normally distributed population with a mean of...

    The weights of 9 year old male children are normally distributed population with a mean of 80 pounds and a standard deviation of 17 pounds. Determine the probability that a random sample of 26 such children has an average less than 72 pounds. Round to four decimal places. QUESTION 8 A Test has scores that are normally distributed with a mean of 71 and a standard deviation of 15. Determine the probability that a random sample of 26 test scores...

  • I.Q.s in the population are normally distributed with a mean = 100 and a standard deviation...

    I.Q.s in the population are normally distributed with a mean = 100 and a standard deviation =15. Find the Z-score (two decimal places) for an I.Q. of 130

  • 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.

  • The scores on a Statistics exam are normally distributed with a mean 75 with a standard...

    The scores on a Statistics exam are normally distributed with a mean 75 with a standard deviation of 5. If nine students are randomly selected what is the probability that their mean score is greater than 68. (a) .0808 (b) -.4000 (c) .9192 (d) .0001 (e) .9999 29. Refer to question 28. Suppose that students with the lowest 10% of scores are placed on academic probation, what is the cutoff score to avoid being placed on academic probation? (a) >...

  • 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...

  • 1. The distribution of heights of adult females: We assume that height is normally distributed with...

    1. The distribution of heights of adult females: We assume that height is normally distributed with a population mean of 65 inches and a population standard deviation of 4 inches. 2. The distribution of heights of adult males: We assume that height is normally distributed with a population mean of 70 inches and a population standard deviation of 5 inches. a. Above what Z-score value does 2.5% of the normal distribution fall? Using the formula for Z-scores and the Z-score...

  • 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...

  • A normally distributed population has a mean of 500 and a standard deviation of 80. a....

    A normally distributed population has a mean of 500 and a standard deviation of 80. a. Determine the probability that a random sample of size 25 selected from this population will have a sample mean less than 463 . b. Determine the probability that a random sample of size 16 selected from the population will have a sample mean greater than or equal to 538. A company makes windows for use in homes and commercial buildings. The standards for glass...

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