I-tailed or 2-tailed test. c. Calculate the test statistic. d. Determine the p-value of the test statistic (use an online p-value calculator). e. Summarize your conclusion from this analysis in several sentences (use an alpha level a = .05). f. Construct a 95% confidence interval for the population mean u. g. What do you conclude from the confidence intervals about whether or not your decision to retain or reject the null hypothesis was well-founded? How do you know this? Explain. 2. (10 points) Locate the (NELS:88) student level dataset and find the variable for Base Year Science Achievement variable (bytxsstd). The 268 students in this dataset had a mean score of 51.97. Suppose you tested a similar group of students using the same science test, but this group scored an average of 48. Is this difference statistically significant at a Type I error (a) of .05? Please provide a statement of the null and alternative hypothe