Mathematics, 08.11.2019 12:31, alfonso55
a teacher wants to compare the mean geology scores of two different classes. she is testing the null hypothesis that there is no difference in the population mean scores of the two classes. the difference of the sample means is 51.4. if the standard deviation of the distribution of the difference of sample means is 16.66, what is the 95% confidence interval for the population mean difference? a)between -33.2 and + 33.2 b)between -49.9 and +49.9c)between -102.8 and +102.8d)between -154.2 and +154.2
Answers: 2
Mathematics, 21.06.2019 16:30, kelseybell2707
Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.
Answers: 1
Mathematics, 21.06.2019 17:30, ooorozco
Assume that 1400 births are randomly selected and 1378 of the births are girls. use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high. choose the correct answer below. a. the number of girls is neither significantly low nor significantly high. b. the number of girls is significantly high. c. the number of girls is significantly low. d. it is impossible to make a judgment with the given information.
Answers: 1
a teacher wants to compare the mean geology scores of two different classes. she is testing the null...
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