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Biology, 21.12.2019 06:31 kiannadgarnica
Aproposed null hypothesis states that there is no difference in the population mean heights of two neighboring districts. the difference of the sample means is 10 cm, and the standard deviation of the difference of sample means is 6 cm. which conclusion can we draw at the 68% confidence level?
a. the population means of the two districts are different.
b. the population means of the two districts are not different.
c. the difference of the sample means of the two districts is 0.
d. the sample means of the two districts are not different.
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