Question

A researcher wants to determine whether girls spend more time in a day texting than boys do. They gather a sample of n1 = 10 girls and a sample of n2 = 6 boys. They find that the average time spent texting for girls is M1 = 3 hours with a SS1 of 44. They also find that the average time texting for males is M2 = 2 hours with a SS2 of 40. Use an alpha level of α = 0.05 for your computation. What is the critical/cut-off t value? Calculate the variance. Find the Estimated Standard Error. Find the effect size (r-squared) and interpret it in terms of the percent of variance accounted for if the effect was small, medium, or large.

          A researcher wants to determine whether girls spend more time in a day texting than boys do. They gather a sample of n1 = 10 girls and a sample of n2 = 6 boys. They find that the average time spent texting for girls is M1 = 3 hours with a SS1 of 44. They also find that the average time texting for males is M2 = 2 hours with a SS2 of 40. Use an alpha level of α = 0.05 for your computation. 
What is the critical/cut-off t value?
Calculate the variance.
Find the Estimated Standard Error.
Find the effect size (r-squared) and interpret it in terms of the percent of variance accounted for if the effect was small, medium, or large.

Added by Michael H.

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