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In: Statistics and Probability

Calcium is the most abundant mineral in the body and also one of the most important....

Calcium is the most abundant mineral in the body and also one of the most important.

The recommended daily allowance (RDA) of calcium for adults is 800 milligrams (mg). A random sample of 18 people with incomes below the poverty level gives the following daily calcium intakes:

686, 433, 743, 647, 734, 641, 993, 620, 574, 634, 850, 858, 992, 775, 1113, 672, 879, 609

At the 1% significance level, do the data provides sufficient evidence to conclude that the mean calcium intake of all people with income levels below the poverty level is less than the RDA of 800 mg?

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orchestra answered 1 year ago
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