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In a randomized comparative experiment on the effect of calcium in the diet on blood pressure, researchers divided 54 healthy white males at random into two groups. One group received calcium; the other, a placebo. At the beginning of the study, the researchers measured many variables on the subjects. The paper reporting the study gives x = 114.9 and s = 9.3 for the seated systolic blood pressure of the 27 members of the placebo group.
1. Give a 95% confidence interval for the mean blood pressure in the population from which the subjects were recruited.
2. What conditions for the population and the study design are required by the procedure you used in (a)? Which of these conditions are important for the validity of the procedure in this case?
1.write a brief essay describing the benefits of maintenance planning in detail.two pages minimum.of the six planning
You purchased a piece of property for $30,000 nine years ago and sold it today for $83,190. What was the annual rate of return on your investment?
The current world economy is increasingly becoming integrated and interdependent; as a result, the relationship between business and society is becoming more complex. Use the Internet to research Apple.
company zs earnings and dividends per share are expected to grow indefinitely by 5 a year. if next years dividend is 10
describe the risk exposures in the following financial transactions. identify which transactions are influenced by
Evidently one procedure gives darker colors than the other. Make a confidence interval estimate for the mean darkness of cotton minus the mean darkness of ramie after this dye procedure. Use 99% as your confidence level.
As a manager of a large, broadly diversified portfolio of stocks and bonds you realized that changes in certain microeconomic variables might directly affect the performance of your portfolio.
what is the future value of these investment cash flows six years from today?
a bond yield with a face value of 1000 has a current yield of7 and a coupon rate of 8. what is the bonds price?a 6
When Allen waited an additional two weeks, the stock price climbed to $510. Allen, feeling a bit of anxiety, decides to exercise the option and realize some gains.-In exercising this option, what price is Allen getting the stock for?
a bookseller has long done business only within the united states. recently its managers have decided to branch out.
Write about Islamic Bonds Sukuk or TMa" data-scaytid="4" style="box-sizing: border-box;">Shari'a compliant bonds.
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