Sample size is needed-find confidence mean intake of calcium

Reference no: EM13153971

What sample size is needed to estimate with 95% confidence the mean intake of calcium within 20 units of the true mean if the intake is from a normal distribution with a variance of 1900 units?

a. What is E, your margin of error?
b. What is your standard deviation?
c. What is alpha?
d. What is the z-value for alpha/2?
e. What is the sample size?

Reference no: EM13153971

Questions Cloud

What percentage of this loss will the insurance company pay : What percentage of this loss will the insurance company pay? How much of the loss will George and Nancy have to absorb?

Expenditure recorded as an asset : When should an expenditure be recorded as an asset rather than an expense?

What is the pressure of the gas in the second tank : A sample of gas is stored in 716 mL tank at 205 kPa and 300 K. The gas is transferred to a different tank with a volume of 925 mL and 325 K. What is the pressure of the gas in the second tank?

Common action of a corporation that is listed on the nyse : 1. Choose a common action of a corporation that is listed on the NYSE and on the basis of prices during the last 60 months to determine their rates of returns during those months and total rate of return; do the same for the same period with the mark..

Sample size is needed-find confidence mean intake of calcium : What sample size is needed to estimate with 95% confidence the mean intake of calcium within 20 units of the true mean if the intake is from a normal distribution with a variance of 1900 units?

Example of the kinds of decisions : Explain what each of the different responsibility centers is and what each is accountable for and why each center has its own budget. Give an example of the kinds of decisions where incremental analysis would be used in each center.

What strategy does p&g appear to be moving toward : What strategy does P&G appear to be moving toward? What are the benefits of this strategy? What are the potential risks associated with it?

What volume does gas occupy : At 710.mm hg a sample of nitrogen gas occiuped 625 ml.what volume does gas occupy if the temperature remains constant and the pressure increases to760.mm hg?

What is the amount of the net working capital : Bonner Collision has shareholders' equity of $141,800. The firm owes a total of $126,000 of which 60 percent is payable within the next year. The firm net fixed assets of $161,900. What is the amount of the net working capital?

User Account

All Pages