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# 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 patient's total calcium tests gave the following readings (in mg/dl). Assume that the population of x values has an approximately normal distribution. 10.1 9.6 10.7 8.9 9.4 9.8 10.0 9.9 11.2 12.1

(a)

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

= 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

a. x =10.17 mg/dl s=0.93... View the full answer

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