Supposed you used a 10-point rating scale to measure intention-to-buy (1 = definitely would not buy and 10 = definitely would buy).If a group of 40 males had a mean of 7 and a standard deviation of 2.5,while a group of 35 females had a mean of 5 and a standard deviation of 1.4,the standard error of the difference between the means would be approximately:
A)0.48
B)1.36
C)2.45
D)not enough information to determine

Question

Quizplus · Accepted Answer

The standard error of the difference between the means is calculated using the formula: √((s1^2/n1) + (s2^2/n2)), where s1 and s2 are the standard deviations, and n1 and n2 are the sample sizes. Plugging in the values: √((2.5^2/40) + (1.4^2/35)) ≈ 0.48.

Supposed You Used a 10-Point Rating Scale to Measure Intention-To-Buy