Over the past several months an adult patient has been treated for severe muscle spasms that condition is associated with an average total calcium level of 6 mg the patient's total calcium test gave the following readings and milligrams assumed that the population of X values has an approximately normal distribution 9.1, 9.4, 10.5, 8.9, .9.4, 9.8, 10.0, 9.9 11.2, 12.1 use the calculator with mean and sample standard deviation keys to find the simple meaning reading