7 Steps for Tests of Significance1. State the research question.2. Identify the parameter.3. State the hypotheses.4. Choose the method.5. Do the test.6. Interpret the p-value. Must be stated in the context of the problem.7. Draw a conclusion. Must be stated in the context of the problem.

March 2, 2022 Statistics Test 1 1. (20 pts.) A researcher for the state was investigating the how many homes had unsafe carbon monoxide levels throughout the state. The researcher recorded the whether the carbon monoxide level was safe, number of doors and windows, and the zip code of the house. (a). What are the observational units? (b). What are the variables? (c). Identify any categorical variables. (d). Identify any quantitative variables. 2. (35 pts.) A consumer association claimed that 80%% of all supermarket prices end in the digit 9 or 5. Suppose you check a random sample of 1 15 items in a supermarket and find that 98 have prices that end in 9 or 5. Does this indicate that more than 80% of the prices in the store end in digits 9 or 5? 3. (5 pts.) Explain what is wrong with the following statement: You can use a significance test to evaluate the hypothesis Ho: p= .85 versus the alternate hypothesis Ha: IT