Solutions Statistics

Solution) A psychologist would like to know how much difference there is between the problem-solving ability o

Question: A psychologist would like to know how much difference there is between the problem-solving ability of 8-year-old children versus 10-year-old children. A random sample of 10 children is selected from each group. The children are given a problem-solving test, and the results are summarized as follows:

8-year-olds	10-year-olds
n = 10	n = 10
xbar= 31	xbar= 48
s2 = 15.22	s2 = 20.78

a. Determine whether the variances can be considered equal. Show your work please. (2 points)

b. Test the hypothesis that the problem-solving ability of 10 year olds is different from that of 8 year-olds. Again, please show your work (3 points)

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Solution Format: Word Document