Question: To study the muscle mass decrease with age in women, a nutritionist randomly selected 15 women from each 10-year age group, beginning with age 40

To study the muscle mass decrease with age in women, a nutritionist randomly selected 15 women from each 10-year age group, beginning with age 40 and ending with age 79. The scatter plot of muscle mass versus age is shown below. Please raise any concern that you have for fitting a simple linear regression model.

To study the muscle mass decrease with age in women, a nutritionist

1201 O 110 100 Oo 90 O C 80 70 OC 60 50 40 50 60 Age 70 1201 O 110 100 Oo 90 O C 80 70 OC 60 50 40 50 60 Age 70

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