A Report on the U

question 5

Multiple Choice

A report on the U.S.economy indicates that 28% of Americans have experienced difficulty in making mortgage payments.A news organization randomly sampled 400 Americans from 10 cities named the "fastest dying cities in the U.S." (Forbes Magazine, August 2008) and found that 136 reported such difficulty.Does this indicate that the problem is more severe among these cities? The correct null and alternative hypotheses for testing this claim are ________________________ .

• A)H₀ : p = 0.28 and H_A : p > 0.28
• B)H₀ : p = 0.28 and H_A : p < 0.28
• C)H₀ : p = 0.28 and H_A : p ≠ 0.28
• D)H₀ : p ≠ 0.28 and H_A : p = 0.28
• E)H₀ : p > 0.28 and H_A : p = 0.28

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Definitions:

Selection Sort

A simple, comparison-based sorting algorithm that divides the input list into a sorted and an unsorted region, repeatedly selecting the smallest or largest element from the unsorted region and moving it to the sorted region.

Nested Loops

A loop inside another loop, where the inner loop completes all its iterations for every single iteration of the outer loop.

For Loops

A control flow statement for specifying iteration, allowing code to be executed repeatedly based on a given condition.

Insertion Sort

A simple sorting algorithm that builds the final sorted array (or list) one item at a time, suitable for small datasets.