Two Different Types of Alloy, a and B, Have Been

question 51

Essay

Two different types of alloy, A and B, have been used to manufacture experimental specimens of a small tension link to be used in a certain engineering application. The ultimate strength (ksi) of each specimen was determined, and the results are summarized in the accompanying frequency distribution. $$\begin{array} { c c l } \hline & \text { A } & \text { B } \\\hline 26 - < 30 & 6 & 4 \\\hline 30 - < 34 & 12 & 9 \\\hline 34 - < 38 & 15 & 19 \\\hline 38 - < 42 & 7 & 10 \\\hline & m = 40 & n = 42 \\\hline\end{array}$$ Compute a 95% CI for the difference between the true proportions of all specimens of alloys A and B that have an ultimate strength of at least 34 ksi.

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Definitions:

Expected Revenue

The amount of money a business anticipates receiving from the sale of goods or services within a certain time period.

Low-value

Describing items or services that are relatively inexpensive or considered to be of minor importance or worth.

Oral Auction

An event where items or services are sold to individuals who make the highest spoken offer.

True Values

Refers to the actual, inherent value or worth of an item, property, or financial instrument, as opposed to its market price or cost.