Question

A random sample of 11 observations was taken from a normal population. The sample mean and...

A random sample of 11 observations was taken from a normal population. The sample mean and standard deviation are xbar= 74.5 and s= 9. Can we infer at the 5% significance level that the population mean is greater than 70?

I already found the test statistic (1.66) but I’m at a loss for how to find the p-value.

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

Homework Answers

Answer #1

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 A random sample of eight observations was taken from a normal population. The sample mean...
a A random sample of eight observations was taken from a normal population. The sample mean and standard deviation are x = 75 and s = 50. Can we infer at the 10% significance level that the population mean is less than 100? b Repeat part (a) assuming that you know that the population standard deviation is σ = 50. c Review parts (a) and (b). Explain why the test statistics differed.
The sample mean and standard deviation from a random sample of 29 observations from a normal...
The sample mean and standard deviation from a random sample of 29 observations from a normal population were computed as x¯=36 and s = 10. Calculate the t statistic of the test required to determine whether there is enough evidence to infer at the 7% significance level that the population mean is greater than 31. Test Statistic =
The sample mean and standard deviation from a random sample of 33 observations from a normal...
The sample mean and standard deviation from a random sample of 33 observations from a normal population were computed as x¯=34 and s = 8. Calculate the t statistic of the test required to determine whether there is enough evidence to infer at the 10% significance level that the population mean is greater than 30.
1) The sample mean and standard deviation from a random sample of 22 observations from a...
1) The sample mean and standard deviation from a random sample of 22 observations from a normal population were computed as x¯=40 and s = 13. Calculate the t statistic of the test required to determine whether there is enough evidence to infer at the 7% significance level that the population mean is greater than 37. Test Statistic= 2) The contents of 33 cans of Coke have a mean of x¯=12.15 and a standard deviation of s=0.13. Find the value...
A random sample of 100 observations from a normal population whose standard deviation is 50 produced...
A random sample of 100 observations from a normal population whose standard deviation is 50 produced a mean of 75. Does this statistic provide sufficient evidence at the 5% level of significance to infer that the population mean is not 80?
A sample of 64 observations is taken from a normal population known to have a standard...
A sample of 64 observations is taken from a normal population known to have a standard deviation of 13.7. The sample mean is 47.9. Calculate the test statistic to evaluate the hypothesis µ=46. Enter your answer to 2 decimal places. A sample of 20 observations is taken from a normal population known to have a standard deviation of 17.3. The sample mean is 47.2. Calculate the test statistic to evaluate the hypothesis µ≤48. Enter your answer to 2 decimal places....
a simple random sample of size 36 is taken from a normal population with mean 20...
a simple random sample of size 36 is taken from a normal population with mean 20 and standard deivation of 15. What is the probability the sample,neab,xbar based on these 36 observations will be within 4 units of the population mean. round to the hundreths placee
a simple random sample of size 36 is taken from a normal population with mean 20...
a simple random sample of size 36 is taken from a normal population with mean 20 and standard deivation of 15. What is the probability the sample,neab,xbar based on these 36 observations will be within 4 units of the population mean. round to the hundreths place
A sample of 31 observations is selected from a normal population. The sample mean is 11,...
A sample of 31 observations is selected from a normal population. The sample mean is 11, and the population standard deviation is 3. Conduct the following test of hypothesis using the 0.05 significance level. H0: μ ≤ 10 H1: μ > 10 e-1. What is the p-value? (Round your answer to 4 decimal places.) e-2. Interpret the p-value? (Round your final answer to 2 decimal places.)
A random sample of 100 observations was drawn from a normal population. The sample variance was...
A random sample of 100 observations was drawn from a normal population. The sample variance was calculated to be s^2 = 220. Test with α = .05 to determine whether we can infer that the population variance differs from 300. Use p-value (from chi-square table) and critical value
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT