Z-Test
Monica's reading comprehension score = 27
Mean fourth grade reading comprehension score = 21
Standard deviation of the fourth grade's reading comprehension = 1.8
Lucy wants to know how her fourth-grade daughter, Monica, scored on a test of reading comprehension compared to the population of other fourth graders in the school district
1. State the dependent variable.
2. Explain whether Lucy should use a one-tailed or a two-tailed z-test and explain why.
3. When alpha is set at .05, the critical value is ± 1.96. Should the null hypothesis be retained or rejected? Explain why