BBBASICSTAT8ACC 8.2.017.MI.S. MY NOTES ASK YOUR TEACHER Dver 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. 9.5 8.4 10.5 9.5 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. (in mg/dl; round your answers to two decimal places.) x = 10.03 s = 0.95 x mg/dl v 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. O Yes. This confidence interval suggests that the patient no longer has a calcium deficiency. O 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 calcium deficiency.
BBBASICSTAT8ACC 8.2.017.MI.S. MY NOTES ASK YOUR TEACHER Dver 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. 9.5 8.4 10.5 9.5 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. (in mg/dl; round your answers to two decimal places.) x = 10.03 s = 0.95 x mg/dl v 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. O Yes. This confidence interval suggests that the patient no longer has a calcium deficiency. O 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 calcium deficiency.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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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 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.
- 9.5, 8.4, 10.5, 9.5, 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 \( \bar{x} \) and the sample standard deviation \( s \). (in mg/dl; round your answers to two decimal places.)
\[ \bar{x} = 10.03 \, \text{mg/dl} \]
\[ s = 0.95 \, \text{mg/dl} \] ✗
**(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. ✔
**Note:** The provided answers are not displayed for the confidence interval limits in part (b).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7aeb506e-af93-4768-b77e-6313e85f4e04%2Fadf154ce-a15c-40da-b8f7-4ed2e489cc79%2F60q518j_processed.jpeg&w=3840&q=75)
Transcribed Image Text: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.
- 9.5, 8.4, 10.5, 9.5, 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 \( \bar{x} \) and the sample standard deviation \( s \). (in mg/dl; round your answers to two decimal places.)
\[ \bar{x} = 10.03 \, \text{mg/dl} \]
\[ s = 0.95 \, \text{mg/dl} \] ✗
**(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. ✔
**Note:** The provided answers are not displayed for the confidence interval limits in part (b).
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