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 X 9 10 S 8 40 10 50 9 50 9 40 9 80 USE SALT a Use a calculator with mean and sample standard deviation keys to find the sample mean reading x and the sample standard deviation s Round your answers to four decimal places mg dl mg dl 10 00 9 90 11 20 12 10 b Find a 99 9 confidence interval for the population mean of total calcium in this patient s blood Round your answer to two decimal places lower limit upper limit mg dl 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 O 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