O A. The null hypothesis is that there is no difference between the average score of the children with AS and the population average score. The alternative hypothesis is that the average score of the children with AS will be higher than that of the population average. O B. The null hypothesis is that there is no difference between the average score of the children with AS and the population average score. The alternative hypothesis is that the average score of the children with AS will be lower than that of the population average. O C. The null hypothesis is that there is no difference between the average score of the children with AS and the population average score. The alternative hypothesis is that the average score of the children with AS and the population average score are different. O D. The alternative hypothesis is that there is no difference between the average score of the children

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Assuming a two-tailed statistical test, what would the null and alternative hypotheses be for this question?
O A. The null hypothesis is that there is no difference between the average score of the children with AS
and the population average score. The alternative hypothesis is that the average score of the
children with AS will be higher than that of the population average.
O B. The null hypothesis is that there is no difference between the average score of the children with AS
and the population average score. The alternative hypothesis is that the average score of the
children with AS will be lower than that of the population average.
O C. The nullI hypothesis is that there is no difference between the average score of the children with AS
and the population average score. The alternative hypothesis is that the average score of the
children with AS and the population average score are different.
O D. The alternative hypothesis is that there is no difference between the average score of the children
with AS and the population average score. The null hypothesis is that the average score of the
children with AS and the population average score are different.
Transcribed Image Text:Assuming a two-tailed statistical test, what would the null and alternative hypotheses be for this question? O A. The null hypothesis is that there is no difference between the average score of the children with AS and the population average score. The alternative hypothesis is that the average score of the children with AS will be higher than that of the population average. O B. The null hypothesis is that there is no difference between the average score of the children with AS and the population average score. The alternative hypothesis is that the average score of the children with AS will be lower than that of the population average. O C. The nullI hypothesis is that there is no difference between the average score of the children with AS and the population average score. The alternative hypothesis is that the average score of the children with AS and the population average score are different. O D. The alternative hypothesis is that there is no difference between the average score of the children with AS and the population average score. The null hypothesis is that the average score of the children with AS and the population average score are different.
The researchers recruited a sample of 92 parents who had a school-aged child with Asperger
syndrome (AS). The parents completed a series of questionnaires about their child's behavior and
social skills. For many of these questionnaires, normative data were available regarding the
population mean and standard deviation. As a first step, the researchers wanted to determine
whether the children with AS truly had poorer social skills and more behavior problems, on average,
than typically developing children. The researchers wrote, “Single sample z tests were performed to
determine whether the mean scores of the children with AS in the current sample differed
significantly from the mean scores in the normative samples" (p. 364).
Transcribed Image Text:The researchers recruited a sample of 92 parents who had a school-aged child with Asperger syndrome (AS). The parents completed a series of questionnaires about their child's behavior and social skills. For many of these questionnaires, normative data were available regarding the population mean and standard deviation. As a first step, the researchers wanted to determine whether the children with AS truly had poorer social skills and more behavior problems, on average, than typically developing children. The researchers wrote, “Single sample z tests were performed to determine whether the mean scores of the children with AS in the current sample differed significantly from the mean scores in the normative samples" (p. 364).
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