Question

A population has a mean of 53 and a standard deviation of 21. A sample of 81 observations will be taken The probability that the sample mean will be greater than 57.95 is None of the alternative answers is correct. 0495 4505 0.017
0 0
Add a comment Improve this question Transcribed image text
Know the answer?
Add Answer to:
A population has a mean of 53 and a standard deviation of 21. A sample of...
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
  • A population has a mean of 300 and a standard deviation of 24. A simple random sample of 144...

    A population has a mean of 300 and a standard deviation of 24. A simple random sample of 144 observations will be taken. What is the probability that the sample meanwill be between 297 and 303?

  • 5.4.1 Question Help A population has a mean μ-84 and a standard deviation σ-36. Find the...

    5.4.1 Question Help A population has a mean μ-84 and a standard deviation σ-36. Find the mean and standard deviation of a sampling distribution of sample means with sample size n 81. μί-d (simplify your answer.) 5.4.18-T Question Help I * The population mean and standard deviation are given below. Find the indicated probability and determine whether a sample mean in the given range below would be considered unusual. If convenient, use technology to find the probability For a sample...

  • A sample of size 40 will be taken from a population whose mean and standard deviation...

    A sample of size 40 will be taken from a population whose mean and standard deviation are 68 and 12, respectively. Calculate the probability that the sample mean will be greater than or equal to 70. (3 decimal places)

  • A population has a mean of 400 and a standard deviation of 50. Suppose a sample...

    A population has a mean of 400 and a standard deviation of 50. Suppose a sample of size 100 is selected and I is used to estimate u. Use z-table. a. What is the probability that the sample mean will be within +9 of the population mean (to 4 decimals)? b. What is the probability that the sample mean will be within +13 of the population mean (to 4 decimals)? A population proportion is 0.3. A sample of size 300...

  • 1. Given a normal population which has a mean of 140 and a standard deviation of...

    1. Given a normal population which has a mean of 140 and a standard deviation of 21, find the probability that a random sample of 100 has a mean between 138 and 145. 2. If all possible samples of size n are drawn from an infinite population with standard deviation 8, then the standard error of the sample mean equals 1.0 if the sample size is 64. a. true b. false 3. You have completed an hypothesis test and determine...

  • A population has a mean of 55.5 and a standard deviation of 12.7. A sample of...

    A population has a mean of 55.5 and a standard deviation of 12.7. A sample of 72 will be taken. Find the probability that the sample mean will be between 51.1 and 56.3. smaller z score = Number (2 decimals) larger z score = Number (2 decimals) The probability = Number (use 4 decimals)

  • A normally distributed population has a mean of 600 and a standard deviation of 60. a....

    A normally distributed population has a mean of 600 and a standard deviation of 60. a. Determine the probability that a random sample of size 25 selected from this population will have a sample mean less than 579. 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 636.

  • A normal population has a mean of 64 and a standard deviation of 24. You select...

    A normal population has a mean of 64 and a standard deviation of 24. You select a random sample of 32. Use Appendix B.1 for the z-values. Compute the probability that the sample mean is: (Round the final answers to 4 decimal places.) a. Greater than 67. Probability            b. Less than 60. Probability            c. Between 60 and 67. Probability     

  • A normal population has a mean of 62 and a standard deviation of 14. You select...

    A normal population has a mean of 62 and a standard deviation of 14. You select a random sample of 9. Compute the probability the sample mean is: (Round z values to 2 decimal places and final answers to 4 decimal places.) (a) Greater than 64.   Probability    (b) Less than 58.    Probability    (c) Between 58 and 64.   Probability   

  • A population has a mean of 50 and a standard deviation of 7. You select a...

    A population has a mean of 50 and a standard deviation of 7. You select a random sample of 36. Compute the following: The probability that the sample mean will be larger than 51.5. (3 point) The probability that the sample mean will be smaller than 48. (3 point) The value for which there is a .025 probability that the sample mean will be greater than. (3 points)

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