Over the past several months, an adult patient has been treated for tetany (severe muscle spasms). This condition is associated with an average total calcium level below 6 mg/dl. Recently, the...

(a)

Use a calculator with mean and sample standard deviation keys to find the sample mean reading  and the sample standard deviations. (in mg/dl; round your answers to two decimal places.)
x =  mg/dl

s =  mg/dl

(b)

Find a 99.9% confidence interval for the population mean of total calcium in this patient's blood. (in mg/dl; round your answer to two decimal places.)
lower limit=          mg/dl
upper limit =         mg/dl

(c)

Based on your results in part (b), do you think this patient still has a calcium deficiency? Explain.