Question

A population has a mean of 75 and a standard deviation of 27. Find the mean...

A population has a mean of 75 and a standard deviation of 27. Find the mean and standard deviation of a sampling distribution of sample means with sample size of 81.

Homework Answers

Answer #1

Solution :

Given that,

mean = = 75

standard deviation = = 27

n = 81

The sampling distribution of sample means = = 75

The sampling distribution standard deviation = = / n

= 27 81

= 3

Know the answer?
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
Similar Questions
A population has a mean mu equals=75 and a standard deviation sigmaσequals=8. Find the mean and...
A population has a mean mu equals=75 and a standard deviation sigmaσequals=8. Find the mean and standard deviation of a sampling distribution ​( muμx​ &​) of sample means with sample size n=64
A population has a mean muμequals=75 and a standard deviation sigmaσequals=24. Find the mean and standard...
A population has a mean muμequals=75 and a standard deviation sigmaσequals=24. Find the mean and standard deviation of a sampling distribution of sample means with sample size nequals=64. μx=__ ​(Simplify your​ answer.) σx=___ ​(Simplify your​ answer.)
A population has a mean mu=86 and a standard deviation sigma=22. Find the mean and standard...
A population has a mean mu=86 and a standard deviation sigma=22. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=248.
A population has a mean μ=78 and a standard deviation σ=22. Find the mean and standard...
A population has a mean μ=78 and a standard deviation σ=22. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=264. μx= ?????
A population has a mean mu equals 87 and a standard deviation sigma equals 21. Find...
A population has a mean mu equals 87 and a standard deviation sigma equals 21. Find the mean and standard deviation of a sampling distribution of sample means with sample size n equals 259.
A population has a mean μ=40 and a standard deviation σ=4. What is the standard deviation...
A population has a mean μ=40 and a standard deviation σ=4. What is the standard deviation of the sampling distribution of the sample means if the sample size is n=16?
A population has a mean muequals75 and a standard deviation sigmaequals8. Find the mean and standard...
A population has a mean muequals75 and a standard deviation sigmaequals8. Find the mean and standard deviation of a sampling distribution ​( mux​ & font size increased by 1 font size increased by 1 font size increased by 1 font size decreased by 1 font size decreased by 1 sigma font size decreased by 1 nothing font size increased by 1 nothing font size decreased by 1 font size decreased by 1 nothing font size decreased by 1 nothingx ​)...
A population has a mean of 75 and a standard deviation of 32. Suppose a random...
A population has a mean of 75 and a standard deviation of 32. Suppose a random sample size of 80 will be taken. 1. What are the expected value and the standard deviation of the sample mean x ̅? 2. Describe the probability distribution to x ̅. Draw a graph of this probability distribution of x ̅ with its mean and standard deviation. 3. What is the probability that the sample mean is greater than 85? What is the probability...
When constructing a confidence interval estimate for a population mean​ (when the standard deviation of the...
When constructing a confidence interval estimate for a population mean​ (when the standard deviation of the population is​ known), what is the calculation that has to be made to obtain the error​ margin? A. You multiply the number of standard deviations by the standard deviation of the sampling distribution of sample means. B. You subtract the sample mean from the population mean and then divide by the standard deviation of the population. C. You divide the standard deviation of the...
A certain test has a population mean (mu) of 285 with a population standard deviation (sigma)...
A certain test has a population mean (mu) of 285 with a population standard deviation (sigma) or 125. You take an SRS of size 400 find that the sample mean (x-bar) is 288. The sampling distribution of x-bar is approximately Normal with mean: The sampling distribution of x-bar is approximately Normal with standard deviation: Based on this sample, a 90% confidence interval for mu is: Based on this sample, a 95% confidence interval for mu is: Based on this sample,...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT
Active Questions
  • Identifying Activity Bases in an Activity-Based Cost System Comfort Foods Inc. uses activity-based costing to determine...
    asked 9 minutes ago
  • Solve y'' + 2y' + 4y = 1 subject to y(0) = y'(0) = 0 (differential...
    asked 42 minutes ago
  • A school psychologist wants to know if a popular new hypnosis technique impacts depression. The psychologist...
    asked 51 minutes ago
  • Two identical sedimentation tanks are to be designed for an activated sludge plant with a flow...
    asked 54 minutes ago
  • Hello, could you provide an original example of a security flaw or vulnerability related to strings....
    asked 1 hour ago
  • Let f(x)=5−log(x+1), g(x)=x2−2x−4 and k(x)=5/(x−4). (a) Find (fog)(x)(fog)(x) and its domain using the interval notation. (b)...
    asked 1 hour ago
  • List the main load transfer mechanisms in pile foundation and comment about the optimal spacing of...
    asked 1 hour ago
  • An athlete swings a 6.50-kg ball horizontally on the end of a rope. The ball moves...
    asked 1 hour ago
  • 1. Observation research must be systematic, not casual or haphazard, in its design. True or False...
    asked 2 hours ago
  • "Thinking as skill". Dr. Edward de Bono gave Lateral Thinking its name and developed techniques for...
    asked 2 hours ago
  • Part 1 a) Earned Value Management (EVM) is a project management technique for measuring project performance...
    asked 2 hours ago
  • 11.3.2 Levi-Strauss Co manufactures clothing. The quality control department measures weekly values of different suppliers for...
    asked 2 hours ago