Question

# 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.)

(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

#### Top Answer

a. x=101.7 mg/dl s=0.93 mg/dl b.... View the full answer