An experiment was done to look at whether there is an effect of the number of hours spent practising a musical instrument and gender on the level of musical ability. A sample of 30 (15 men and 15 women) participants who had never learnt to play a musical instrument before were recruited. Participants were randomly allocated to one of three groups that varied in the number of hours they would spend practising every day for 1 year (0 hours, 1 hours, 2 hours). Men and women were divided equally across groups. All participants had a one-hour lesson each week over the course of the year, after which their level of musical skill was measured on a 10-point scale ranging from 0 (you can’t play for toffee) to 10 (‘Are you Mozart reincarnated?’). Which of the following sentences regarding the
ANOVA output below is correct?
A. Practicing for 2 hours per day significantly increased skill level compared to when only 1 hour was spent practising per day.
B. Any amount of time spent practising significantly decreased skill level compared to when no time was spent practising.
C. Any amount of time spent practising significantly increased skill level compared to when no time was spent practising.
D. Practicing for 2 hours a day significantly decreased skill level compared to when only 1 hour was spent practising a day.
Answer: C
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