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A Random Sample of 81 SAT Scores of Students Applying

Question 20

Multiple Choice

A random sample of 81 SAT scores of students applying for merit scholarships showed an average of 1400 with a standard deviation of 300. The t value needed to develop the 95% confidence interval for the population mean SAT score is


A) 1.96.
B) 1.998.
C) 1.645.
D) 1.28.

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