Test the Claim That the Samples Come from Populations with the Same

question 151

Essay

Test the claim that the samples come from populations with the same mean. Assume that the
populations are normally distributed with the same variance. At the 0.025 significance level,
test the claim that the three brands have the same mean if the following sample results have
been obtained. $$\begin{array} { c c c } \text { Brand A } & \text { Brand B } & \text { Brand } \mathbf { C } \\\hline 32 & 27 & 22 \\34 & 24 & 25 \\37 & 33 & 32 \\33 & 30 & 22 \\36 & & 21 \\39 & &\end{array}$$

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Definitions:

Aggregate-supply Curve

A curve showing the total quantity of goods and services that producers in an economy are willing to supply at various price levels.

Phillips Curve

A concept in economics that demonstrates an inverse relationship between the rate of unemployment and the rate of inflation.

Shift

In economics, a change in the position of a demand or supply curve which reflects a change in conditions other than price.

Adverse Supply Shock

A sudden and significant decrease in the supply of a good or service, which typically leads to an increase in prices and can temporarily boost inflation.