A parenting magazine reports that the average amount of wireless data used by teenagers each month is 11 Gb. For her science fair project, Ella sets out to prove the magazine wrong. She claims that the mean among teenagers in her area is less than reported. Ella collects information from a simple random sample of 4 teenagers at her high school, and calculates a mean of 8.6 Gb per month with a standard deviation of 3.1 Gb per month. Assume that the population distribution is approximately normal. Test Ella's claim at the 0.005 level of significance. Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below. Answer Ho:μ = 11 Ha P O < O O th V 11 Keypa Keyboard Shortc Tables

A parenting magazine reports that the average amount of wireless data used by teenagers each month is 11 Gb. For her science fair project, Ella sets out to prove the magazine wrong. She claims that the mean among teenagers in her area is less than reported. Ella collects information from a simple random sample of 4 teenagers at her high school, and calculates a mean of 8.6 Gb per month with a standard deviation of 3.1 Gb per month. Assume that the population distribution is approximately normal. Test Ella's claim at the 0.005 level of significance. Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below. Answer Ho:μ = 11 Ha P O < O O th V 11 Keypa Keyboard Shortc Tables

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A researcher conducts a hypothesis test on a population proportion. Her null and alternative hypothesis are H0:p = 0.4 and Ha: p < 0.4. The test statistic and p-value for the test are z = -3.01 and p-value = 0.0013. For asignificance level of a= 0.05, choose the correct conclusion regarding the null hypothesis.H0:________________________ Ha:_______________________Compare the p-value and a:_______________Decision:_________________________Conclusion:___________________________________________________________
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Question 6 In this exercise, we are conducting many hypothesis tests to test a claim. Assume that the null hypothesis is true. If 100 tests are conducted using a significance level of 5%, approximately how many of the tests will incorrectly find significance?Enter your answer in accordance to the question statement of the tests will find significance.
Strength of concrete: The compressive strength, in kilopascals, was measured for concrete blocks from five different batches of concrete, both three and six days after pouring. The data are as follows. Can you conclude that the mean strength after three days is less than the mean strength after six days? Let u, represent the mean strength after three days and u, = 4, -Hh. Use the a = 0.10 level and the P-value method with the TI-84 Plus calculator. Block 1 2 3 4 After 3 days 1304 1321 1367 1352 1380 After 6 days 1319 1348 1363 1364 1386 Send data to Excel Part: 0/ 4 Save For Later Submit Assignment Skip Part Check Answer O 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use Privacy 2:20 PM (? 5/27/2021 Search Insert prt sc bac & 7. %24 8. 6. 3.
Part 1 of 4 If P = 0.03, the result is statistically significant at the a = 0.01 level. The statement is (Choose one) ▼ true false Part 2 of 4 If P = 0.03, the null hypothesis is rejected at the a=0.01 level. The statement is (Choose one) v
Compute the P-value. Round the answer to at least four decimal places. P-value = Part: 2/ 4 Part 3 of 4 Determine whether to reject H: Do not reject the null hypothesis Hg. Reject Do not reject
Pp# 5: can you help me solve and understand this practice problem please? A step by step explanation would be appreciated. Thank you!
Imagine you are doing a Related-Samples t-test, and you are on Step Three of the hypothesis test. The sample of difference scores that you calculated is -5, -6, +2, -2, 0. What is the correct t-obtained? NOTE: The answer options also show many numbers that you calculate as part of the WORK for getting the t-obtained. VERY IMPORTANT HINT: The SS of these difference scores is 44.80.
Which of the following relates to the rejection of the null hypothesis when it is actually false? 1. Type I error 2. Type II error 3. Power 4. Statistical significance
Part 1 You will be presented with several relationships and will be asked to write out the null and alternative hypotheses in the proper form. In this section you will: 1. Indicate the directionality of the relationship and what are being compared. Write the null hypothesis (remember, this is in terms of the population). 2. 3. Write the alternative hypothesis (remember, this is in terms of the samples). 1. A medical student is designing a clinical trial to test a new depression medication. The student believes the medication will reduce the severity of patient depression. 2. A researcher is running a study examining a new pilot training software using virtual reality technology. The researcher feels pilots trained using VR training program will perform differently than traditionally trained pilots during a simulated landing task. 3. A police officer believes younger drivers get ticketed more than older drivers. A researcher at a local university has decided to test the police officer's…
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Question 5: what is the conclusion?