• Please state the null and alternative hypothesis.
• Using Alpha level .05, please test the null hypothesis (what is the appropriate test, what is the critical value?) Draw the rejection region.
• Calculate the test statistic
• State the conclusion you are entitled to draw as a result of this test.
• Calculate the effect size as appropriate for the hypothesis test used.

16.) The average price for turnips in Animal Crossing: New Horizons is 95 bells. Samantha believes that selling on Tuesday mornings will sell for more than average. To test this, she sells her turnips on Tuesday mornings for 20 weeks, noting that the average price during this time was 117 (SD=48). Did Samantha's sample demonstrate an increased in price? What was the effect size of this difference?

17.) An outbreak of Salmonella-related illness was attributed to ice cream produced at a certain factory. Scientists initially measured the level of Salmonella in a sample of 36 randomly sampled batches, with average level of 0.41 MPN/g. Is there evidence that this sample is greater than the accepted population average 0.31 and standard deviation of 0.32 MPN/g? Were these results meaningful?

18.)A recent study on the effects of Tamiflu looked into whether the antiviral medication can reduce the duration of the flu or not. To test this, researchers selected sample of 42 individuals recently diagnosed with the flu. Twenty-one of these individuals were given a placebo, and their average flu durations was 12.6 days (SD=1.88). The remaining twenty one were given Tamiflu, and their average flu duration was 11.4 days (SD= 1.58). Did Tamiflu make reduce duration of the flu? What was the effect size of Tamiflu?