In Order to Estimate the Mean Earnings Forecast for a Large

question 69

Short Answer

In order to estimate the mean earnings forecast for a large company,an investor looked up earnings forecasts from six financial analysts.The six forecasts he found were 200,220,300,185,210,and 210 (in millions).Suppose the investor knows the population standard deviation is 25 million.Calculate a 95% confidence interval of the population mean earnings forecast.

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Definitions:

Correlation Coefficient

A numerical measure of some type of correlation, meaning a statistical relationship between two variables, indicating strength and direction of a linear relationship between them.

Scatterplot

A type of graph used in statistics to display values for two variables for a set of data, showing how much one variable is affected by another.

Variables

Entities that can assume different values or categories in a study or experiment, influencing the outcomes of statistical analyses.

Regression Model

A statistical approach to modelling the relationship between a dependent variable and one or more independent variables.