Which of the following best describes the null hypothesis associated with using a 2-sample t-test to compare an outcome between 2 groups? Question 1 options: The population median in group 1 = the population median in group 2 The sample mean in group 1 = the sample mean in group 2 There is no difference between group 1 and group 2 The population mean in group 1 = the population mean in group 2 Group 1 = group 2

A 2 sample t test used for test whether the unknown population meansof two groups are equal or not…

Answered: Which of the following best describes…

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter12: Probability

Section12.4: Discrete Random Variables; Applications To Decision Making

Problem 10E

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Which of the following best describes the null hypothesis associated with using a 2-sample t-test to compare an outcome between 2 groups?

Question 1 options:

	The population median in group 1 = the population median in group 2
	The sample mean in group 1 = the sample mean in group 2
	There is no difference between group 1 and group 2
	The population mean in group 1 = the population mean in group 2
	Group 1 = group 2

Definition Definition Middle value of a data set. The median divides a data set into two halves, and it also called the 50th percentile. The median is much less affected by outliers and skewed data than the mean. If the number of elements in a dataset is odd, then the middlemost element of the data arranged in ascending or descending order is the median. If the number of elements in the dataset is even, the average of the two central elements of the arranged data is the median of the set. For example, if a dataset has five items—12, 13, 21, 27, 31—the median is the third item in ascending order, or 21. If a dataset has six items—12, 13, 21, 27, 31, 33—the median is the average of the third (21) and fourth (27) items. It is calculated as follows: (21 + 27) / 2 = 24.

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