The recommended daily dietary allowance for zinc among males older than age 50 years is 15 mg/day. The article "Nutrient Intakes and Dietary Patterns of Older Americans: A National Study" (J. of...

This was answered already. but i need to know what are the hypothesis and the conclusion for this.I am just starting about this topic. Thank you again!

Extracted text: The recommended daily dietary allowance for zinc among males older than age 50 years is 15 mg/day. The article "Nutrient Intakes and Dietary Patterns of Older Americans: A National Study" (J. of Gerontology, 1992: M145–150) reports the following summary data on intake for a sample of males age 65–74 11.3, and s = years: n 115, х 6.43. Does this data indicate that average daily zinc intake in the population of all males ages 65–74 falls below the recommended allowance?