A study compares the means of two groups, each having N = 20. If the standard deviations of the two groups are 10.00 and 6.00, what is the value for the standard error of the difference ?

A) .89
B) 2.61
C) 5.43
D) 6.80

Question

A study compares the means of two groups, each having N = 20. If the standard deviations of the two groups are 10.00 and 6.00, what is the value for the standard error of the difference

?

A) .89
B) 2.61
C) 5.43
D) 6.80

along chanel · Accepted Answer

Final Answer : B, Explanation :  The standard error of the difference between means is calculated as the square root of [(SD1^2/N1) + (SD2^2/N2)]. Substituting the given values, we get the standard error as square root of [(10^2/20) + (6^2/20)] = 2.61. Therefore, the correct answer is B.

A study compares the means of two groups, each having N = 20. If the standard deviations of the two groups are 10.00 and 6.00, what is the value for the standard error of the difference ?

A) .89
B) 2.61
C) 5.43
D) 6.80

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Learning Objectives

Related questions

A study compares the means of two groups, each having N = 20. If the standard deviations of the two groups are 10.00 and 6.00, what is the value for the standard error of the difference ?A) .89B) 2.61C) 5.43D) 6.80

Definitions

Learning Objectives

Learning Objectives

Related questions

A study compares the means of two groups, each having N = 20. If the standard deviations of the two groups are 10.00 and 6.00, what is the value for the standard error of the difference ?

A) .89
B) 2.61
C) 5.43
D) 6.80