4. Claim: p > 25; o: = 0.05. Sample statistics: 2 = 26.2, s = 2.32, n = 17. Assume the population is normally distributed. 5. A research center claims that at most 18% of U.S. adults' online food purchases are for snacks. In a random sample of 1995 U.S. adults, 20% say their online food purchases are for snacks. At or = 0.10, is there enough evidence to support the center's claim? 6. An auto manufacturer claims that the variance of the gas mileages in a model of hybrid vehicle is 0.16. A random sample of 30 vehicles has a variance of 0.26. At 1x = 0.05, is there enough evidence to reject the claim? Part 2: Correlation and Linear Regression: Label each part and box your answer 7. The number of hours 9 students spent studying for a test and their scores on that test are as follow: (a) What is the 1' value? (b) Is it a negative or positive correlation? (c) Find the linear equation from this data (d) What is the test score if a student studies for 6.5 hours