In 2012 the american journal of clinical nutrition reported


In 2012, The American Journal of Clinical Nutrition reported that 31% of Australian adults over age 25 have a Vitamin D deficiency. The data came from AusDiab study of 11218 Australians.

a)do these data meet the assumptions necessary for inference?

b)create a 95% confidence interval

c) interepret the inerval in context

d)Explain what 95% confidence means

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