Homework SourseA developmental psychologist is examining problemsolving abi
A developmental psychologist is examining problem-solving ability for grade school children. Random samples of 5-year-old, 6-year-old, and 7-year-old children are obtained with n=3 in each sample. Each child is given a standardized problem-solving task, and the psychologist records the number of errors. The psychologist wants to know if there are any significant differences in problem-solving ability depending on age level. The psychologist conducts an ANOVA test at .05 level of significance and obtains the p-value of .031 for the F-ratio.
Which of the following would be the correct interpretation of the results of this test?
The problem-solving ability differs by age. More specifically 7-year olds have a significantly lower problem-solving ability than that of 5-year olds and 6-year olds.
The problem-solving ability differs by age. More specifically 7-year olds have a significantly higher problem-solving ability than that of 5-year olds and 6-year olds.
The problem-solving ability differs by age but we do not know what age groups differ.
The problem-solving ability does not differ by age.
| a. | The problem-solving ability differs by age. More specifically 7-year olds have a significantly lower problem-solving ability than that of 5-year olds and 6-year olds. | |
| b. | The problem-solving ability differs by age. More specifically 7-year olds have a significantly higher problem-solving ability than that of 5-year olds and 6-year olds. | |
| c. | The problem-solving ability differs by age but we do not know what age groups differ. | |
| d. | The problem-solving ability does not differ by age. |
Solution
The problem-solving ability differs by age but we do not know what age groups differ.
