PE & SELF-ESTEEM 2 of 4 What is the critical z/t value at α = 0.05? A researcher is evaluating the effectiveness of a new physical education program for elementary school children. The program is designed to reduce competition and increase individual self-esteem. A sample of n = 35 children is selected and the children are placed in the new program. After 3 months, each child is given a standardized self-esteem test. Her sample received a sample mean of 41. For the general population of elementary school students, the self-esteem test has a population mean of 40 and a population standard deviation of 5. What is the critical z/t score at α = 0.05?

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