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C and D have been marked as incorrect. To conduct a one-sample test of means and use the z distribution as the test statistic We
C and D have been marked as incorrect.
To conduct a one-sample test of means and use thezdistribution as the test statistic
We need to know the population mean.
We can use the sample standard deviation providednis at least 30.
We neednto be at least 5.
Both a and b are correct.
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