Dementia is a person€™s loss of intellectual and social abilities that is severe enough to interfere with judgment, behavior, and daily functioning. Alzheimer€™s disease is the most common type of dementia. In the article €œLiving with Early Onset Dementia: Exploring the Experience and Developing Evidence-Based Guidelines for Practice€ (Alzheimer€™s Care Quarterly, Vol. 5, Issue 2, pp. 111€“122), P. Harris and J. Keady explored the experience and struggles of people diagnosed with dementia and their families. A simple random sample of 21 people with early-onset dementia gave the following data on age, in years, at diagnosis. Use limit grouping with a first class of 40€“44 and a class width of 5.

a. Determine a frequency distribution.
b. Obtain a relative-frequency distribution.
c. Construct a frequency histogram based on your result from part (a).
d. Construct a relative-frequency histogram based on your result from part (b).

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