Suppose we wish to test whether coffee increases class attendance. We randomize students in a course of 30 students so that half are given coffee and half are not every morning for a month, and students are not allowed to consume coffee outside of the experimental setting. We find that the mean attendance among coffee drinkers was 7.92 classes (standard deviation = 0.18) whereas among the non-coffee drinkers, the mean attendance was 7.51 classes (standard deviation = 0.02). Test the claim using a 5% significance level. (a) State the null and alternative hypotheses and determine which one corresponds to the claim that is being tested. (b) Determine the appropriate distribution to use and calculate the test statistic. Round to two decimal places. (c) Calculate the P-value and state the decision of the hypothesis test. (d) State the conclusion as a complete English sentence in the context of the original claim. Edit View Insert Format Tools Table 12pt V Paragraph BIUA