Suppose that a researcher is interested in the possible relationship between the amount of screen time each day (X) and the IQ of school-age children (Y). She reasons that increased screen time might be related to lower IQ scores. Suppose that data on these variables were collected from 50 children, with the following outcomes: The sum of squares for daily hours of screen time is 65, the sum of squares for the IQ scores is 4675, and the sum of the products of the deviation scores is -220. Based on this information, calculate the appropriate test (by hand) at the 5% level of significance. Decide on a 1-tail or 2-tail test based on the goals of the research. Provide your answers in the spaces provided; do NOT show your work in the blanks. The value for the calculated test statistic
Suppose that a researcher is interested in the possible relationship between the amount of screen time each day (X) and the IQ of school-age children (Y). She reasons that increased screen time might be related to lower IQ scores. Suppose that data on these variables were collected from 50 children, with the following outcomes: The sum of squares for daily hours of screen time is 65, the sum of squares for the IQ scores is 4675, and the sum of the products of the deviation scores is -220.
Based on this information, calculate the appropriate test (by hand) at the 5% level of significance. Decide on a 1-tail or 2-tail test based on the goals of the research. Provide your answers in the spaces provided; do NOT show your work in the blanks.
The value for the calculated test statistic
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