HomeworkLib
Question

A sample of 64 observations is selected from a normal population. The sample mean is 215,...

A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the 0.025 significance level. H0: μ ≥ 220 H1: μ < 220 Is this a one- or two-tailed test? One-tailed test Two-tailed test What is the decision rule? (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.) What is the value of the test statistic? (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.) What is your decision regarding H0? Reject Do not reject What is the p-value? (Round your answer to 4 decimal places.)

math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

One-tailed test

value of the test statistic z=-2.67

p-value =0.0038

rject HO

0 0
Add a comment
Know the answer?
Add Answer to:
A sample of 64 observations is selected from a normal population. The sample mean is 215,...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • A sample of 64 observations is selected from a normal population. The sample mean is 215,...

    A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis using the 0.03 significance level: HO: u? 220 H1 : < 220 a. Is this a one-or two-tailed test? Two-tailed b. What is the decision rule? (Negative answer should be indicated by a minus sign. Round the final answer to 2 decimal places.) (Click to select) v Ho when z< D...

  • A sample of 40 observations is selected from a normal population. The sample mean is 64,...

    A sample of 40 observations is selected from a normal population. The sample mean is 64, and the population standard deviation is 8. Conduct the following test of hypothesis using the 0.01 significance level. H0: μ = 65 H1: μ ≠ 65 Is this a one- or two-tailed test? One-tailed test Two-tailed test What is the decision rule? Reject H0 if −2.576 < z < 2.576 Reject H0 if z < −2.576 or z > 2.576 What is the value...

  • A sample of 45 observations is selected from a normal population. The sample mean is 49,...

    A sample of 45 observations is selected from a normal population. The sample mean is 49, and the population standard deviation is 5. Conduct the following test of hypothesis using the 0.10 significance level. H0: μ = 51 H1: μ ≠ 51 Is this a one- or two-tailed test? One-tailed test Two-tailed test What is the decision rule? Reject H0 if −1.645 < z < 1.645 Reject H0 if z < −1.645 or z > 1.645 What is the value...

  • A sample of 39 observations is selected from a normal population. The sample mean is 43,...

    A sample of 39 observations is selected from a normal population. The sample mean is 43, and the population standard deviation is 6. Conduct the following test of hypothesis using the 0.02 significance level. H0: μ = 45 H1: μ ≠ 45 Is this a one- or two-tailed test? One-tailed test Two-tailed test What is the decision rule? Reject H0 if −2.326 < z < 2.326 Reject H0 if z < −2.326 or z > 2.326 What is the value...

  • A sample of 44 observations is selected from one population with a population standard deviation of 3.1. The sample mean...

    A sample of 44 observations is selected from one population with a population standard deviation of 3.1. The sample mean is 101.0. A sample of 56 observations is selected from a second population with a population standard deviation of 5.0. The sample mean is 99.5. Conduct the following test of hypothesis using the 0.10 significance level. H0 : μ1 = μ2 H1 : μ1 ≠ μ2 Is this a one-tailed or a two-tailed test? One-tailed test Two-tailed test State the...

  • A sample of 36 observations is selected from a normalpopulation. The sample mean is 49,...

    A sample of 36 observations is selected from a normal population. The sample mean is 49, and the population standard deviation is 5. Conduct the following test of hypothesis using the 0.05 significance level.H0: μ = 50H1: μ ≠ 50Is this a one- or two-tailed test?One-tailed testTwo-tailed test doneWhat is the decision rule?Reject H0 if −1.96 < z < 1.96Reject H0 if z < −1.96 orz > 1.96 doneWhat is the value of the test statistic? (Negative amount should be...

  • A sample of 44 observations is selected from one population with a population standard deviation of...

    A sample of 44 observations is selected from one population with a population standard deviation of 3.9. The sample mean is 102.0. A sample of 46 observations is selected from a second population with a population standard deviation of 5.6. The sample mean is 100.3. Conduct the following test of hypothesis using the 0.10 significance level. H0 : μ1 = μ2 H1 : μ1 ≠ μ2 Is this a one-tailed or a two-tailed test? One-tailed test Two-tailed test State the...

  • A sample of 37 observations is selected from a normal population. The sample mean is 21,...

    A sample of 37 observations is selected from a normal population. The sample mean is 21, and the population standard deviation is 3. Conduct the following test of hypothesis using the 0.02 significance level. H0: μ ≤ 20 H1: μ > 20 Is this a one- or two-tailed test? One-tailed test Two-tailed test What is the decision rule? Reject H0 when z > 2.054 Reject H0 when z ≤ 2.054 What is the value of the test statistic? (Round your...

  • A sample of 71 observations is selected from a normal population. The sample mean is 24,...

    A sample of 71 observations is selected from a normal population. The sample mean is 24, and the population standard deviation is 8. Conduct the following test of hypothesis using the 0.05 significance level. H0 : μ ≤ 23 H1 : μ > 23 a. Is this a one- or two-tailed test? (Click to select)  One-tailed test  Two-tailed test b. What is the decision rule? (Round the final answer to 3 decimal places.) (Click to select)  Reject  Accept  H0 and  (Click to select)  accept  reject  H1 when z >  ....

  • A sample of 35 observations is selected from a normal population. The sample mean is 26,...

    A sample of 35 observations is selected from a normal population. The sample mean is 26, and the population standard deviation is 4. Conduct the following test of hypothesis using the 0.05 significance level. H0 : μ ≤ 25 H1 : μ > 25 A.) Is this a one- or two-tailed test? "Two-tailed"-the alternate hypothesis is different from direction. "One-tailed"-the alternate hypothesis is greater than direction B.) What is the decision rule? (Round your answer to 3 decimal places.) H0,...

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