Question

A researcher was interested in whether children raised in a communal environment differed from children in general in their ability to recognize emotional expression. The test of emotional expression involves showing a series of pictures of various facial expressions. In this series, the average child in the population in general can identify 14 with a standard deviation of 3. The researcher administers the picture test to a group of 9 children raised in a communal environment and the children are able to identify an average of 16 expressions correctly. (20%)

a. Based on these data, what should you conclude about whether being raised in a communal environment makes any difference in children's ability to recognize emotional expression?

b. Explain your conclusion and procedure to a person who is familiar with mean, standard deviation, Z scores, normal curve areas, and probability, but is not familiar with hypothesis testing. Be sure to discuss the 3 distributions involved in your statistical test

Answer 1