The Current (In $\mu A$ ) Necessary to Produce a Certain Level of Brightness of Certain

question 59

Essay

The current (in $\mu A$ ) necessary to produce a certain level of brightness of a television tube was measured for two different types of glass and three different types of phosphor, resulting in the accompanying data: $$\begin{array} { l | c c c } \hline & { \text { Phosphor Type } } \\& \mathbf { 1 } & \mathbf { 2 } & \mathbf { 3 } \\\hline \text { Glass 1 } & 280,290,285 & 300,310,295 & 270,285,290 \\\text { Type 2 } & 230,235,240 & 260,240,235 & 220,225,230 \\\hline\end{array}$$ Assuming that both factors are fixed, test $H _ { o A B } \text { versus } H _ { oA B }$ at level .01. Then if $H _ { o A B }$ cannot be rejected, test the two sets of main effect hypotheses.

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Definitions:

Accounts Payable

Liabilities to creditors for goods, supplies, or services purchased on credit but not yet paid.

Subsidiary Ledgers

Detailed ledgers that break down and provide supporting information for accounts listed in the general ledger.

Subsidiary Posting

A detailed entry process in accounting that involves recording transactions in subsidiary ledgers for a more comprehensive financial tracking.

General Ledger

A comprehensive record of all financial transactions over the life of a company, used to compile financial statements.