Mathematics, 06.12.2019 00:31, graciemccain
The average salary of all residents of a city is thought to be about $39,000. a research team surveys a random sample of 200 residents; it happens that the average salary of these 200 is about $40,000 with a sd of $12,000. make a z -test of the null hypothesis that this difference was just chance (in the sampling).
round your values to three decimal places.
the test statistic is .
the p -value is approximately
Answers: 1
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