Psychologists have made extensive studies on the relationship between child abuse and later criminal behavior. A study was conducted that consisted of follow-ups of 52 boys who were abused in their preschool years and of 61 boys who were not abused. The data of the number of criminal offenses of those boys in their teens yielded the following summary statistics: Abused Nonabused Mean 2.52 1.63 Standard Deviation 1.84 1.22 Is the mean number of criminal offenses significantly higher for the abused group than that for the nonabused group? Use RStudio to perform an independent- sample t-test with α = .05. Print the value for your pooled variance, your computed t-statistic, your critical t-value, and explain your conclusion.
Psychologists have made extensive studies on the relationship between child
abuse and later criminal behavior. A study was conducted that consisted of
follow-ups of 52 boys who were abused in their preschool years and of 61 boys
who were not abused. The data of the number of criminal offenses of those boys
in their teens yielded the following summary statistics:
Abused Nonabused
Mean 2.52 1.63
Standard Deviation 1.84 1.22
Is the mean number of criminal offenses significantly higher for the abused group
than that for the nonabused group? Use RStudio to perform an independent-
sample t-test with α = .05. Print the value for your pooled variance, your
computed t-statistic, your critical t-value, and explain your conclusion.
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