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Mathematics, 01.04.2021 19:40 gatornathan79

A research study examined the blood vitamin D levels of the entire US population of landscape gardeners. The population average level of vitamin D in US landscapers was found to be 45.1 ng/mL with a standard deviation of 5.531 ng/mL. Assuming the true distribution of blood vitamin D levels follows a normal distribution, if you randomly select a landscaper in the US, what is the likelihood that his/her vitamin D level will be 54.75 ng/mL or more

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