Vitamin D 2012. In 2012, the American Journal ofClinical Nutrition reported that 31% of Australian adultsover age 25 have a vitamin D deficiency. The data camefrom the AusDiab study of 11,218 Australians.a) Do these data meet the assumptions necessary forinference? What would you like to know that youdon’t?b) Create a 95% confidence interval.c) Interpret the interval in this context.d) Explain in this context what “95% confidence”means.

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ISBN:9781938168383
Author:Jay Abramson
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Chapter9: Sequences, Probability And Counting Theory
Section9.7: Probability
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Vitamin D 2012. 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 the AusDiab study of 11,218 Australians.
a) Do these data meet the assumptions necessary for
inference? What would you like to know that you
don’t?
b) Create a 95% confidence interval.
c) Interpret the interval in this context.
d) Explain in this context what “95% confidence”
means.

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