What is the appropriate sample size

Reference no: EM13240797

City Opera, a local opera company, wishes to take a sample of its subscribers to learn the average number of years people have been subscribing. The director of research expects the average to be 12 years and believes the standard deviation will be about 2 years (approximately one-sixth of the range). She wishes to be 95 percent confident of her estimate. What is the appropriate sample size?

Reference no: EM13240797

Questions Cloud

Accounting rate of return : Accounting rate of return. Based you calculation on the initial cost of the investment.

Interpret the following table showing the percentage : Interpret the following table showing the percentage of individuals on a low-fat or low-cholesterol diet by gender and age.

Explain what is known as thermodynamic control : Which of these products is formed under what is known as thermodynamic control, and explain mechanistically why this product predominates under thermodynamic conditions.

What is the definition of an independent variable : What about a variable I intend to use to help do some forecasting. Interest rates, for example, will have an effect on the number of houses purchased --- may I call interest rate the independent variable and number of houses purchased the dependent v..

What is the appropriate sample size : City Opera, a local opera company, wishes to take a sample of its subscribers to learn the average number of years people have been subscribing.

Events that occur throughout an audit examination : Following is a list of events that occur throughout an audit examination. Indicate, using the correct letter, the time period during which these events are most likely to occur. An event may occur in more than one time period.

Explain the complete mechanism for the reaction : Write the complete mechanism for the reaction of the above molecule with HCl. Used curved arrows to indicate the formation or breakage of covalent bonds, label all charges, and show each step separately.

What is the minimal score to be classified at top 10% of : The state of Texas college admission board has set a standard for automatic acceptances to any university at top 10% of any graduating class will be allowed to attend any university in the state.

How much work w is done by the electric force : A point charge with charge q1 = 2.00?C is held stationary at the origin, How much work W is done by the electric force on the moving point charge

User Account

All Pages