Question

The line graph shows the average number of awakenings during the night for men and women of different ages. Use the graph to estimate the difference between the average number of awakenings during the night between 45 ​-year-old men and 45 ​-year-old women.

Answer 1

Following are the calculation to the given equation:

• The average number of awakenings during the night among 45-year-old men is 5.18 (approx) in the given graph.
• The average number of awakenings during the night among 45-year-old women is 3 (from the given graph).
• The distinction between the average numeral of awakening during the night between 45-year old (men and women) is
• $\to 5.18 -3.00=2.18$

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