As Americans have become more environmentally conscious, there has been a social shift in general public's feelings towards recycling. In recent years, a number of companies have gone into the business of collecting used newspapers from households and recycling them. A financial analyst for one such company has recently determined that the firm would make a profit if the mean weekly newspaper collection from households exceeded 2 pounds. The test statistic is found to be t=2.480. Match the probabilities (p-values) below to the claim which would be tested to determine if the firm would be profitable. 0.0077 a. greater than alternative 0.9923 b. less than alternative 0.0154 c. not-equal-to alternative. The pH of a liquid is a measure of its acidity or alkalinity. Pure water was a pH of 7, which is neutral. Solutions with a pH less than 7 are acidic while solutions with a pH greater than 7 are alkaline. A biologist was interested in testing the purity of lake water in Florida. A random sample of 71 lakes was taken, and the pH of water in each lake was recorded. The sample of lakes had an average pH of 6.424 with a standard deviation of 2.301. Using a significance level of 0.01, is there evidence the mean pH of Florida lakes is not neutral? What hypotheses should be tested? Ho:}=7 Ho:}#7 Ho:}=7 Ho:}=7 Ha 7 Ha7 = Test Statistic: t= (Note: round the t-score to two decimal places) probability = Select an answer decision: Select an answer At the 0.01 level, there Select an answer significant evidence to conclude the mean pH in Florida lakes is Select an answer 7. Based on the decision of your test and the sample selected, what can you conclude? The mean pH of Florida lakes is acidic. The mean pH of Florida lakes is alkaline. The mean pH of Florida lakes is neutral. The term "freshmen 15" is often used to describe the weight gain associated with one's freshmen year of college. Researchers at a university campus are interested in determining if there is legitimacy in the claim that freshmen, on average, gain 15 pounds in their first year of college. A random sample of 65 college sophomores were asked to self-report the number of pounds they gained in their first year of college. The sample of students had an average weight gain of 18.537 pounds with a standard deviation of 14.046 pounds. Using a significance level of 0.01, is there evidence the mean amount of weight gained during the first year of college is greater than what is claimed? Ho: ?v?v Test Statistic: t= Ha: ?? (Note: round the t-score to two decimal places) probability Select an answer decision: Select an answer At the 0.01 level, there Select an answer significant evidence to conclude the mean amount of weight gained during the first year of college is Select an answer Based on the decision of your test, what type of error is possible? Type I Error Type II Error lbs. If the sample size were increased to 90 individuals, the new test statistic would be t = What effect would this have on the probability for the claim tested? (Draw a picture to help answer this question). O the p-value would be smaller O the p-value would be larger O the p-value would not change