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...


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 ofx values has an approximately normal distribution.


















9.99.010.18.99.49.810.09.911.212.1



(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



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


Yes. This confidence interval suggests that the patient may still have a calcium deficiency.


Yes. This confidence interval suggests that the patient no longer has a calcium deficiency.


No. This confidence interval suggests that the patient may still have a calcium deficiency.


No. This confidence interval suggests that the patient no longer has a calcium deficiency.



Jun 02, 2022
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