The next schoci year. this kindergarten teacher has a select group of 6 advanced readers from her class. She warts to see if this select group's scores differ from the national average (remember the national average is 50 and the standard deviation is 10). What is the z value for comparing this new sample to the population? Round your answer out to three decinal places. Soores on the Reading Test for the Advanced Reading Group 60 65 70 55 42 65 Does this advanced reading group differ from the national average? O Yes O There is not enough information to answer this question O No