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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 caldum level below 6 ma/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. 9.9 90 10.9 8.5 94 9.8 10.0 9.9 11.2 12.1 decimal places. (a) Use a calculator with mean and sample standard deviation keys to find the sample mean reading x and the sample standard deviation's. (in mg/dl; round your answers to tw king/dl (b) Find a 90.90% confidence interval for the population mean of total calcium in this patient's blood. (in my?al; round your answer to two decimal places.) lower limit mg/dl upper limit BA ased on your results in part (b), do you think this patient sull has a calcium deficiency? Explain This confidence interval suggests that the patient may still have a calcium deficiency his confidence interval suggests that the patient no longer has a calcium deficiency This confidence interval suggests that the patient may still have a caldunt deficiency. This confidence interval suggests that the patient no longer has a calcium deficiency. 5:38 PM