An observational study of Alzheimer's disease (AD) obtained data from 16 AD patients exhibiting moderate dementia and selected a group of 10 control...

An observational study of Alzheimer's disease (AD) obtained data from 16 AD patients exhibiting moderate dementia and selected a group of 10 control individuals without AD. AD is a progressive neurodegenerative disease of the elderly and advancing age is known to be a primary risk factor in AD diagnosis. Therefore, it was crucial for the study's credibility to examine whether the ages in the AD group might be significantly different than in the control group. The ages of the subjects in years are summarized in the Minitab Output below.