A Small Stock Brokerage Firm Wants to Determine the Average

question 14

Short Answer

A small stock brokerage firm wants to determine the average daily sales (in dollars) of stocks to their clients. A sample of the sales for 36 days revealed average daily sales of $200,000. Assume that the standard deviation of the population is known to be $18,000.
a.Provide a 95% confidence interval estimate for the average daily sale.
b.Provide a 97% confidence interval estimate for the average daily sale.

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Definitions:

Dependent Variable

In an experiment, it is the variable that is being tested and measured, expected to change as a result of modifications to the independent variable.

Television Viewing

The act of watching content on a television set or through television channels.

Squares Total

The sum of squared differences between each observation and the overall mean of the data set. It is a measure of total variation within a data set.

Sum

The total obtained by adding together a set of numbers or quantities.