Problem 12 The mean gas price in the U.S. is $4.09. A person claims that the average gas price in Oregon is higher than the that. Write the null and alternative hypotheses to test the person's claim using the correct notations and values.

QUESTION 35 A coach believes that her volleyball team is more athletic than the average volleyball team in America. (Think of that as her research hypothesis.) We know that the average volleyball team in America has a score of 100 on the Standard Test for Athleticism (the STA; not to be confused with the SAT). The coach's null hypothesis is: [note: Ho means mu, the population mean of her players' STA according to the null hypothesis] Ho is equal to 0 O Po is less than 0 O HO is not known, nor can it be known O Ho is equal to (or less than) 100 O HO is greater than 100 Save All An Click Save and Submit to save and submit. Click Save All Answers to save all answers. 3325 Chapter 11.pptx 3325 Chapter 1.pptx 3325 Chapter 1.pptx P 3325 Chapter 14.pptx MacBook Air

Questions 38, 39, 40, 41 and 42 are all based on the same information. You want to test the following hypotheses. There are three categories: x, y and z. Họ: Px .20, py ".40, and p, - 40 HẠ: The population proportions are not p, - 20, p, - 40, and p, - 40 A sample size of 200 resulted in 20 observations in category x, 120 in category y and 60 in category z. Use a - 01 and test to see whether the proportions are as stated in Hg. Use the p-value approach. What is the p-value? O Between 005 and .01 Between .025 and .05 Between.01 and .025 O >.05 <.005

Please tell me if they are all correct if not, please answer them correctly. It's homework