Question

A random sample of 16 drawn from a normal population yields a mean of 991 with...

A random sample of 16 drawn from a normal population yields a mean of 991 with a standard deviation of 15. Does this sample indicate that the mean is now different from the establish value of 1000? Use σ= .01.

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

Homework Answers

Answer #1

Dear students, please like it.

Thanks.

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 simple random sample of size n=15 is drawn from a population that is normally distributed....
A simple random sample of size n=15 is drawn from a population that is normally distributed. The sample mean is found to be bar over x=19.5 and the sample standard deviation is found to be s=6.3. Determine if the population mean is different from 25 at the alpha=.01 level of significance. A) Determine the null and alternative hypotheses H0: ___ ____ 25 H1: ____ ____ 25 B) Calculate the p value C) State conclusion. Reject or not reject? Is there...
A simple random sample of size n-15 is drawn from a population that is normally distributed....
A simple random sample of size n-15 is drawn from a population that is normally distributed. The sample mean is found to be 32.5 and the sample standard deviation is found to be s=6.3. Determine if the population mean is different from 26 at the confidence interval .01 level of significance. a) determine the null and alternative hypotheses. b) calculate the p value. c) state the conclusion for the test. d)state the conclusion in context of the problem.
A random sample of size 16 is selected from a normal population with a mean of...
A random sample of size 16 is selected from a normal population with a mean of 173 and a standard deviation of 12. What is the probability that the sample mean will exceed 175? Give answer to two decimal places.
A simple random sample of 16 adults drawn from a certain population of adults yielded a...
A simple random sample of 16 adults drawn from a certain population of adults yielded a mean weight of 63kg. Assume that weights in the population are approximately normally distributed with a variance of 49. Do the sample data provide sufficient evidence for us to conclude that the mean weight for the population is less than 70 kg? Let the probability of committing a type I error be .01. 1. Write the hypotheses, indicate the claim 2. find the critical...
A simple random sample of 16 adults drawn from a certain population of adults yielded a...
A simple random sample of 16 adults drawn from a certain population of adults yielded a mean weight of 63kg. Assume that weights in the population are approximately normally distributed with a variance of 49. Do the sample data provide sufficient evidence for us to conclude that the mean weight for the population is less than 70 kg? Let the probability of committing a type I error be .01. 1. Write the hypotheses, indicate the claim 2. find the critical...
Let X1,...,Xn be a sample drawn from a normal population with mean μ and standard deviation...
Let X1,...,Xn be a sample drawn from a normal population with mean μ and standard deviation σ. Find E[X ̄S2].
8. A random sample is obtained from a normal population with a mean of µ =...
8. A random sample is obtained from a normal population with a mean of µ = 80 and a standard deviation of σ = 8. Which of the following outcomes is more likely? Explain your answer.           A. A sample mean greater than 86 for a sample of n = 4 scores.           B. A sample mean greater than 84 for a sample of n = 16 scores. 9. The distribution of SAT scores is normal with a mean of...
A random sample of 49 measurements from one population had a sample mean of 16, with...
A random sample of 49 measurements from one population had a sample mean of 16, with sample standard deviation 5. An independent random sample of 64 measurements from a second population had a sample mean of 19, with sample standard deviation 6. Test the claim that the population means are different. Use level of significance 0.01. (a) What distribution does the sample test statistic follow? Explain.(c) Compute x1 − x2. x1 − x2 = Compute the corresponding sample distribution value....
A random sample is drawn from a population with mean μ = 52 and standard deviation...
A random sample is drawn from a population with mean μ = 52 and standard deviation σ = 4.3. a. Is the sampling distribution of the sample mean with n = 13 and n = 39 normally distributed? Yes, both the sample means will have a normal distribution. No, both the sample means will not have a normal distribution. No, only the sample mean with n = 13 will have a normal distribution. No, only the sample mean with n...
A simple random sample of size 11 is drawn from a normal population whose standard deviation...
A simple random sample of size 11 is drawn from a normal population whose standard deviation is σ=1.8. The sample mean is ¯x=26.8. a.) Construct a 85% confidence level for μ. (Round answers to two decimal place.) margin of error: lower limit: upper limit: b.) If the population were not normally distributed, what conditions would need to be met? (Select all that apply.) the population needs to be uniformly distributed σ is unknown simple random sample large enough sample size...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT