Lab assignment SPSS Single sample t test - rubric For this assignment, you need the data file called SPSS single sample t test.sav This is a dataset regarding food measurements to test truth in food ads and labels. In 1998, the Nabisco Company announced a "1000 Chips Challenge" claiming that the average 18-ounce bag of their Chips Ahoy cookies contained 1,000 chocolate chips. In the "chocolate_chips" column, you have counts of the number of chocolate chips in bags of cookies. In the "weight" column, you have weights of the bags of cookies. 1) You want to determine whether the bags of cookies have more or less than 1,000 chocolate chips on average. a) Do you need to do a one-tailed or two-tailed t test? Explain why. (1 point) b) What is the research hypothesis? Feel free to use either population parameters or words. (1 point) c) What is the null hypothesis? Feel free to use either population parameters or words. (1 point) 2) Conduct a single sample t test in SPSS to test your hypothesis about the number of chocolate chips. Report the following values (0.5 points each): a) Sample mean (round to one decimal place) = b) Sample standard deviation (round to one decimal place) c) t statistic (round to two decimal places) d) Degrees of freedom (df) = e) Two-sided p value - f) Cohen's d (round to two decimal places) 3) Now let's have a closer look at the effect size. a) Is the effect size positive or negative? What does that mean? (1 point) b) Interpret the effect size (i.e., small, medium-large, etc.). (0.5 point) 4) This question is about your conclusion. a) Use an alpha level of .05. Should you reject the null hypothesis or not? Explain why. (1 point) b) Nabisco claims that their bags of cookies ,000 chocolate chips. Is this claim true or not? (0.5 point)