Question

Notes O As 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 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, 9.7 9.0 10.1 8.5 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 x and the sample standard deviation s. (Round your answers to two decimal places.) mg/dl mg/dl (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 mg/d upper limit mg/d (c) Based on your results in part (b), do you think this patient still has a calclum deficiency? Explain. O 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. O No. This confidence interval suggests that the patient no longer has a calclum deficiency. Need Help? Read It

Answer 1

Rom the olata (99.) 10 Y = lo0361- 1.03 tcr 478 99.9-CI 1 9·9ㅋ 4 4.38 (O VIo 9.9 5369 ( 8-4), 1153) dowen ltmt 8.41 mal d uppen limit 53 mgld c) fnterval Suggest conffdence the NO lo nger has Pattent ho the that calctum detpciency