Question

A distribution of values is normal with a mean of 247.9 and a standard deviation of...

A distribution of values is normal with a mean of 247.9 and a standard deviation of 5.9.
Find P8, which is the score separating the bottom 8% from the top 92%.

P8 =

Enter your answer as a number accurate to 1 decimal place.

Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.

Explain how you found P8.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Given a distribution of values is normal with a mean of and a standard deviation of .

We are required to find P8, which is the score separating the bottom 8% from the top 92%. First we convert P8 to the corresponding Z-score(standardized score). That is

We found the Z-score corresponding to P8. Then used the area to the left of this Z-score under standard normal curve as 0.08. Took the inverse of the standard normal CDF.

0 0
Know the answer?
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
Similar Questions
A distribution of values is normal with a mean of 65.2 and a standard deviation of...
A distribution of values is normal with a mean of 65.2 and a standard deviation of 7.4. Find P32, which is the score separating the bottom 32% from the top 68%. P32 = Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
A distribution of values is normal with a mean of 187.9 and a standard deviation of...
A distribution of values is normal with a mean of 187.9 and a standard deviation of 20.4. Find P10, which is the score separating the bottom 10% from the top 90%. P10 = Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
A population of values has a normal distribution with μ=107μ=107 and σ=44σ=44. You intend to draw...
A population of values has a normal distribution with μ=107μ=107 and σ=44σ=44. You intend to draw a random sample of size n=94n=94. Find P12, which is the score separating the bottom 12% scores from the top 88% scores. P12 (for single values) = Find P12, which is the mean separating the bottom 12% means from the top 88% means. P12 (for sample means) = Enter your answers as numbers accurate to 1 decimal place. Answers obtained using exact z-scores or...
A population of values has a normal distribution with μ=214.2μ=214.2 and σ=79.6σ=79.6. You intend to draw...
A population of values has a normal distribution with μ=214.2μ=214.2 and σ=79.6σ=79.6. You intend to draw a random sample of size n=122. Find P63, which is the score separating the bottom 63% scores from the top 37% scores. P63 (for single values) = Find P63, which is the mean separating the bottom 63% means from the top 37% means. P63 (for sample means) = Enter your answers as numbers accurate to 1 decimal place. Answers obtained using exact z-scores or...
A population of values has a normal distribution with μ = 245.6 and σ = 59.3...
A population of values has a normal distribution with μ = 245.6 and σ = 59.3 . You intend to draw a random sample of size n = 21. Find P91, which is the mean separating the bottom 91% means from the top 9% means. P91 (for sample means) = 100.42 Enter your answers as numbers accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
A population of values has a normal distribution with μ=153 and σ=39.5 You intend to draw...
A population of values has a normal distribution with μ=153 and σ=39.5 You intend to draw a random sample of size n=196 Find P2, which is the score separating the bottom 2% scores from the top 98% scores. P2 (for single values) = Find P2, which is the mean separating the bottom 2% means from the top 98% means. P2 (for sample means) = Enter your answers as numbers accurate to 1 decimal place. Answers obtained using z-scores rounded to...
Expand PreviousNext Check 0/1 ptRetries 6Reattempts 1Info Details A population of values has a normal distribution...
Expand PreviousNext Check 0/1 ptRetries 6Reattempts 1Info Details A population of values has a normal distribution with μ=40.6μ=40.6 and σ=44.1σ=44.1. You intend to draw a random sample of size n=202n=202. Find P22, which is the score separating the bottom 22% scores from the top 78% scores. P22 (for single values) = Find P22, which is the mean separating the bottom 22% means from the top 78% means. P22 (for sample means) = Enter your answers as numbers accurate to 1...
1. A distribution of values is normal with a mean of 70.8 and a standard deviation...
1. A distribution of values is normal with a mean of 70.8 and a standard deviation of 50.9. Find the probability that a randomly selected value is less than 4.6. P(X < 4.6) = 2. A distribution of values is normal with a mean of 66 and a standard deviation of 4.2. Find the probability that a randomly selected value is greater than 69.4. P(X > 69.4) = Enter your answer as a number accurate to 4 decimal places. Answers...
A distribution of values is normal with a mean of 80 and a standard deviation of...
A distribution of values is normal with a mean of 80 and a standard deviation of 22. From this distribution, you are drawing samples of size 34. Find the interval containing the middle-most 36% of sample means: Enter answer using interval notation. In this context, either inclusive or exclusive intervals would be acceptable. Your numbers should be accurate to 1 decimal places. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
A population of values has a normal distribution with μ=144.2μ=144.2 and σ=96.9σ=96.9. You intend to draw...
A population of values has a normal distribution with μ=144.2μ=144.2 and σ=96.9σ=96.9. You intend to draw a random sample of size n=47n=47. Find P35, which is the mean separating the bottom 35% means from the top 65% means. P35 (for sample means) = Enter your answers as numbers accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT