Two Independent Random Samples of Sizes 5 and 7 Are $\mu _ { 1 } - \mu _ { 2 } ,$

question 36

Multiple Choice

Two independent random samples of sizes 5 and 7 are selected from two continuous distributions with means $\mu _ { 1 } - \mu _ { 2 } ,$ and that the two distributions have the same shape and spread. In testing $H _ { o } : \mu _ { 1 } - \mu _ { 2 } = 0 \text { versus } H _ { \pm } : \mu _ { 1 } - \mu _ { 2 } \neq 0$ using the Wilcoxon rank-sum test with approximate significance level of .05, the rejection region for the test is

• A) either \(w \geq 20 \text { or } w \leq 45\)
• B) either \(w \geq 10 \text { or } w \leq 20\)
• C) either \(w \geq 45 \text { or } w \leq 10\)
• D) either \(w \geq 10 \text { or } w \leq 45\)
• E) either \(w \geq 45 \text { or } w \leq 20\)

---

Definitions:

Direct Competition

Two or more businesses offering products or services that directly compete against each other.

Currency Fluctuation

Refers to the variations in the value of one currency relative to another, which can impact international trade and investments.

Substitute Products

Goods and services that perform very similar functions and can be used in place of one another.

Recession

A period of economic decline across a significant portion of an economy, lasting for a few months or more.