Pennsylvania Refining Company is studying the relationship between the pump price of gasoline and the number of gallons sold. For a sample of 15 stations last Tuesday, the correlation was 0.79. 1. State the decision rule for 0.100 significance level. (Round your answer to 3 decimal places.) Reject H0 if t> 2. Compute the value of the test statistic. (Round your answer to 3 decimal places.) Value of the test statistic is 3. Can we conclude that the correlation in the population is greater than zero? Use the 0.100 significance level. HO. We conclude that the correlation in the population is Zero.

you Created a survey that meawere Depression In people. you want to test the Claim that the Mean. meusurements of Depression that peaple have is not egued to 6.5. A sample. of 145 Of you patients had a mean depression measurement of X=6.7 and a standard deviation of l,5.

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1. A professor is interested in how attendance is related to grades her class. She goes through her records and determines each student’s final average and the number of days absent. The scores for her sample are given in the table below. a. Construct a scatter plot of the relationship between final averages and the number of days absent. b. Is there a significant relationship between final averages and the number of days absent? Calculate and interpret the correlation and report it in proper APA format. c. Compute r2 for the data. What percent of the variability in final averages is accounted for by the number days absent?