Question: 17. A random sample of n512 observations from a normal population produced x 547.1 and s2 54.7. Test the hypothesis H : m 548 0

17. A random sample of n512 observations from a normal population produced x 547.1 and s2 54.7. Test the hypothesis H : m 548 0 against H :m±48 a at the 5% level of significance.

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