Question

Samples of n = 25 scores are selected from a population. If the distribution of sample...

Samples of n = 25 scores are selected from a population. If the distribution of sample means has an expected value of 50 and a standard error of 2, what are the mean and the standard deviation for the population?

Homework Answers

Answer #1

Solution :

Given that,

mean = = 50

= 2

n = 25

= 50

= *  n = 2 * 25 = 2 * 5 = 10

mean = 50

standard deviation = 10

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
Samples of n = 16 scores are selected from a population. If the distribution of sample...
Samples of n = 16 scores are selected from a population. If the distribution of sample means has an expected value of 40 and a standard error of 2, what is the mean and the standard deviation for the population?​ ***please provide step by step details
If random samples, each with n = 36 scores, are selected from a positively skewed distribution...
If random samples, each with n = 36 scores, are selected from a positively skewed distribution with µ = 50 and σ = 60, then for the distribution of sample means the expected value of M is ______ and the standard error is _____?
Random samples of size n were selected from a normal population with the means and variances...
Random samples of size n were selected from a normal population with the means and variances given here. n = 25, μ = 12, σ2 = 9 Describe the shape of the sampling distribution of the sample mean. a. The distribution is normal b. The distribution is skewed left c. The distribution is bimodal d. The distribution is uniform e. The distribution is skewed right Find the mean and the standard error of the sampling distribution of the sample mean....
A sample of n = 4 scores is selected from a normal population with a mean...
A sample of n = 4 scores is selected from a normal population with a mean of µ = 50 and a standard deviation of σ = 20. What is the probability of obtaining a sample mean greater than M = 48?
A random sample of size n = 50 is selected from a binomial distribution with population...
A random sample of size n = 50 is selected from a binomial distribution with population proportion p = 0.8. Describe the approximate shape of the sampling distribution of p̂. Calculate the mean and standard deviation (or standard error) of the sampling distribution of p̂. (Round your standard deviation to four decimal places.) mean = standard deviation = Find the probability that the sample proportion p̂ is less than 0.9. (Round your answer to four decimal places.)
Suppose a random sample of n = 25 observations is selected from a population that is...
Suppose a random sample of n = 25 observations is selected from a population that is normally distributed with mean equal to 108 and standard deviation equal to 14. (a) Give the mean and the standard deviation of the sampling distribution of the sample mean x. mean     standard deviation     (b) Find the probability that x exceeds 113. (Round your answer to four decimal places.) (c) Find the probability that the sample mean deviates from the population mean ? = 108...
For a population with µ = 60 and σ = 20, the distribution of sample means based on n = 25 will...
For a population with µ = 60 and σ = 20, the distribution of sample means based on n = 25 will have an expected value of ____ and a standard error of ____.​  
A population of scores forms a normal distribution with a mean of μ = 82 and...
A population of scores forms a normal distribution with a mean of μ = 82 and a standard deviation of σ = 26. (a) What proportion of the scores in the population have values less than X = 86? (Round your answer to four decimal places.) (b) If samples of size n = 15 are selected from the population, what proportion of the samples will have means less than M = 86? (Round your answer to four decimal places.) (c)...
A random sample of size 30 is selected from a known population with a mean of...
A random sample of size 30 is selected from a known population with a mean of 13.2 and a standard deviation of 2.1. Samples of the same size are repeatedly collected, allowing a sampling distribution of sample means to be drawn. a. What is the expected shape of the resulting distribution? b. Where is the sampling distribution of sample means centered? c. What is the approximate standard deviation of the sample means? 2. The lifetimes of a certain type of...
andom samples of size n = 2 are drawn from a finite population that consists of...
andom samples of size n = 2 are drawn from a finite population that consists of the numbers 2,4,6, and 8. a) calculate the mean and the standard deviation of this population. b) list the six possible random samples of size n = 2 that can be drawn from this population and calculate their means. c) Use the results of part (b) to construct the sampling distribution of the mean for random samples of size n =2 from the given...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT