Mathematics, 28.11.2019 07:31 ZachLaVine2016
Ateacher 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?
between -33.2 and +33.2
between -49.9 and +49.9
between -102.8 and +102.8
between -154.2 and +154.2
Answers: 2
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Sera sells t-shirts at the beach. she believes the price of a t-shirt and the number of t-shirts sold are related. she has been experimenting with different prices for the t-shirts. she has collected a data set with five pairs of data; each consists of the price of a t-shirt and the number of shirts sold. the independent variable, which will go on the x-axis, is . the dependent variable, which will go on the y-axis, is the
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Ateacher wants to compare the mean geology scores of two different classes. she is testing the null...
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