Over the past several months, an adult patient has been treated for tetany (sever 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. 9.1 8.6 10.9 8.7 9.4 9.8 10.0 9.9 11.2 12.1 x =                mg/dl s =                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 deficienty? Explain.

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. 9.9 9.0 10.1 8.9 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 and the sample standard deviation s. (in mg/dl; round your answers to two decimal places.) x = _______ mg/dls = _______ 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/dlupper 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…

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. 9.3 8.8 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  and the sample standard deviation s. (in mg/dl; round your answers to two decimal places.) =  mg/dls =  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/dlupper limit          mg/dl

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. 10.1 8.8 10.3 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  and the sample standard deviation s. (in mg/dl; round your answers to two decimal places.) =   mg/dls =   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/dlupper limit          mg/dl

Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 4.6 parts/million (ppm). A researcher believes that the current ozone level is at an excess level. The mean of 14 samples is 4.9 ppm with a variance of 1.2 Does the data support the claim at the 0.01 level? Assume the population distribution is approximately normal. Step 2 of 5 :   Find the value of the test statistic. Round your answer to three decimal places.

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.   9.30 8.60 10.90 9.10 9.40 9.80 10.00 9.90 11.20 12.10   (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.) x=               mg/dl s=               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/dl upper limit           mg/dl