(Answered) Z-testmonicas reading comprehension score 27nbspmean

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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

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