1. Sweet Tooth: Artificial versus Natural Sweetener? The National association of Canadian registered dieticians - Dieticians of Canada, conducts an experiment to test whether diabetics can taste a difference between a cup of coffee sweetened with an articial sweetener and a cup of coffee sweetened with stevia (a natural plant based sweetener). The Dieticians conduct a blind taste test at a diabetic clinic at the QEII on a Saturday morning. They set up a booth with a sign that invites people to \"Have a Free Coffee!\" (They do not mention that the variable of interest is artificial versus natural sweetener, and neither the logos nor packets of sweetener are visible). They use random assignment to decide which type of sweetener (artificial versus natural) each participant will taste. Each participant drinks only one kind. Participants drink 8 oz. of coffee in an unmarked cup. Then they privately fill out a form on which they rate the taste of the coffee by circling a face on the following 5-point \"smile scale" (coded 1: big frown, 5=big smile): How do you like the taste of this coffee (circfe one) ? l1) (2) @Q Results from 35 participants: Taste ratings of participants assigned to the artificial sweetener: 2, 4, 4, 3, 4, 2, 5, 4, 5, 3, 2, 4, 5, 3, 4, 4, 5 Taste ratings of participants assigned to the natural sweetener stevia : 3, 3, 2, 5, 2, 1, 2, 2, 3, 2, 5, 2, 4, 3, 4, 2, 3,1 Enter your data in SPSS/JAMOVI and get your sample (or observed) tvalue for this experimental data: 1. State your hypotheses in symbols and words (Ho null and H1 alternative). 2. State your critical tvalue if a=.05 and you conduct a two-tailed test. 3. Run your test using SPSS/JAMOVI. What is your sample (or observed) tvalue'? 4. Decision: What is yOur statistical conclusion (reject null, fail to reject null)? 5. State your research conclusion (your finding from the experiment, as we did in lab) fully, using correct APA format. B. Imagine this (clearly made-up) situation: Every diabetic who visited a diabetic clinic in Canada last year received a cup of free coffee sweetened with stevia (i.e., natural sweetener) and provided a taste rating on the same smile scale. The population mean p: 2.9 (population 0 is unknown). Is the NATURAL SWEETENER group in your study significantly different than the population (two-tailed, a =.05)? That is, clothe 18 participants in your study who had a cup of coffee with natural sweetener (stevia) perceive it to be different (better/worse) than the population average natural sweetener rating? ( You must think carefully about which statistical test to conduct; hint: think back to last week.) 1. Answer this question by conducting the appropriate t-test by hand using numbers from your SPSS/JAMOVI output from part A (hint: you will need the sample mean and standard deviation). You will need to consult your notes, lecture slides andlor your textbook to find the appropriate equation (remember: you have the population mean, but the population standard deviation is unknown). Note: you do not need to repeat the hypothesis testing steps! Please just indicate (1 ) the t-critical, (2) the t- observed/show your work for the t-observed hand calculation, and (3) indicate whether or not the sample is signicantly different than the population). 2. Confirm your answer by entering the appropriate data in SPSS/JAMOVI and having SPSS/JAMOVI calculate the answer (SPSS: analyze E compare means E \"select appropriate t- test"lJAMOVI: analysis E t-tests E \"select appropriate t-test\"). Submit your data file, output files, and word of pdf version of the assignment. Your lab is due Tuesday, March 15m. 2022 @ 1 :00pm (AST) via Brightspace dropbox