how do you do a two-tailed test with a= .05. with the four steps for hypothesis testing and labeling each step 1,2,3,4? Also, what is it? (maybe a real-life example).

Mensa requies a test score to be in the top 2%. The test has a mean of 100 and Std. Dev. of 15.and scores are normally distributed. If 4 subjects take the test and they have a mean of 132 but the individual scores are lost, can we conclude that all 4 of them are eligible for Mensa?

I need help with all of them plz.

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…

Please help with (D)

Diagnostic tests of medical conditions have several results. The rest result can be positive or negative. A positive test (+) indicates the patient has the condition. A negative test (–) indicates the patient does not have the condition. Remember, a positive test does not prove the patient has the condition. Additional medical work may be required. Consider a random sample of 130 patients, some of whom have a medical condition and some of whom do not. Results of a new diagnostic test for the condition are shown.    Condition Present Condition Absent Row Total Test Result + 109 21 130 Test Result – 21 49 70 Column Total 130 70 200 Assume that the sample is representative of the entire population. For a person selected at random, find P(getting test result – and condition absent). Round your answer to the nearest hundredth.

Student Absences and Grades on the Final Exam Dr. V. noticed that the more frequently a student is late or absent from class the worse he or she performs on the final exam. He decided to investigate. Dr. V. collected a random sample of 22 students. This sample includes the number of times a student is absent and their grades on the final exam. The data can be found in the Excel file Assignment10.xlsx. Do not use any software that I did not assign.   Question 1: Which or the two variables (times absent or grades on the final exam) is the independent variable and which is the dependent variable?   Question 2: Using Microsoft Excel:  SHOW YOUR WORK   Times Late/Absent  Final Exam Grade 1 9 84.00 2 2 92.50 3 12 52.00 4 5 87.00 5 11 75.00 6 24 45.00 7 7 39.00 8 10 46.00 9 19 63.00 10 2 65.00 11 2 98.00 12 17 24.50 13 8 58.00 14 20 69.50 15 55 49.00 16 23 68.50 17 6 70.00 18 4 75.50 19 2 85.00 20 7 97.00 21 2 97.00 22 2 93.50 23 0 93.50 24 2…

what is the P value for this question and how do i get it?

What is the value of ΣX for the scores 2, 5, 3?

hypothesis testing is the topic