test for single meanaccording to one, Basic Statistics

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test for single meanaccording to one

Test for single mean.

According to one investigator's model, the data are like 400 draws made at random from a large box. The null hypothesis says that the average of the box equals 50; the alternative says that the average of the box is more than 50. In fact, the data averaged out to 52.7, and the SD was 25. Compute z, and P. What do you conclude?

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