The following data are from a hypothetical study on the effects of age and time on scores on a test of reading comprehension. Time 12-year olds 16-year olds 18-year olds 30 minutes 66 74 82 60 minutes 69 95 73 90 minutes 80 89 95 (a) State the null hypotheses for this study (in words). (2 mars} (b) Calculate all the sum of squared deviations for the experiment. (9 marks) (c) Calculate all the mean squared deviations for the experiment. (6 marks) (d) Calculate the relevant Fstatistics. (2 marks} (e) Using a signicance level of 5%, what conclusions would you draw from the study