How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from20Fto45F.A random sample of prices ($) for sleeping bags in this temperature range is given below. Assume that the population ofxvalues has an approximately normal distribution.110807085100703023100110105951056011012095906070

Find the sample mean pricexand sample standard deviations. x=$s=$

Using the given data as representative of the population of prices of all summer sleeping bags, find a 90% confidence interval for the mean priceof all summer sleeping bags.

lower limit$upper limit$

Do you want to own your own candy store? Wow! With some interest in running your own business and a decent credit rating, you can probably get a bank loan on startup costs for franchises such as Candy Express, The Fudge Company, Karmel Corn, and Rocky Mountain Chocolate Factory. Startup costs (in thousands of dollars) for a random sample of candy stores are given below. Assume that the population ofxvalues has an approximately normal distribution.9217313594759411610085

Find the sample mean startup costxand sample standard deviations.

x=thousand dollarss=thousand dollars

Find a 90% confidence interval for the population average startup costsfor candy store franchises. (Round your answers to one decimal place.)lower limitthousand dollarsupper limitthousand dollars

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 ofxvalues has an approximately normal distribution.9.99.610.59.19.49.810.09.911.212.1

Use a calculator with mean and sample standard deviation keys to find the sample mean readingxand the sample standard deviations. (Round your answers to two decimal places.)x=mg/dls=mg/dl

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 limitmg/dlupper limitmg/dl

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