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An Experiment Was Done to Look at Whether There Is

question 11

Multiple Choice

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?') .
-An ANOVA was conducted on the data from the experiment. Which of the following sentences best describes the pattern of results shown in the graph?

Definitions:

American Psychiatric Association

A professional organization of psychiatrists aimed at advancing the study, prevention, and treatment of mental illnesses.

Phrenologists

Pseudoscientific practitioners who believed that the shape and size of the cranium could predict personality traits, character, and mental abilities.

Medieval Doctors

Healthcare practitioners in the Middle Ages who often relied on a mixture of religious beliefs, superstition, and early medical practices to treat patients.

Penologists

Specialists in the study of penology, which focuses on the various aspects of the penal system, including the management of prisons and the rehabilitation of offenders.