Z-Test Monica's reading comprehension score = 27 Mean fourth grade reading comprehension score = 21 Standard deviation of the fourth grade's reading...

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