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, 09.03.2020 13:41, donahueno1753

The mean and median of 100 observations are 50 and 52 respectively. The value of the largest observation is 100. It was later found that it is 110. Find the true mean and median.

Answers: 3

Mathematics, 26.09.2019 03:30, bskyeb14579

How much time will (4,10,14,16,18) workers take to do the job?

Answers: 1

Mathematics, 20.06.2019 18:04, lucygperez9892

With math question will mark brainliest question in the pic.

Answers: 3

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