In Cases Where the Population Standard Deviation Is Unknown,it Is

question 3

Multiple Choice

In cases where the population standard deviation is unknown,it is estimated by the sample standard deviation.In this case,the standard error of the mean becomes:

• A) mean / proportion
• B) standard variate / standard deviate
• C) the z-value
• D) p (1 - p)
• E) sample standard deviation / square root of sample size

---

Definitions:

Activity Changes

Variations in the level of operations or production within a company, which can impact financial performance and management strategies.

Rental Charges

Fees incurred for the use of property or equipment that is not owned, usually on a periodic basis such as monthly or yearly.

Machine Hour

A unit of measure representing one hour of operating time for a machine, used in allocating manufacturing costs.

Fixed Cost

Operating expenses that do not change in proportion to the level of production or sales activity, such as rent or salaries.