The University Conducts a Study Designed to Find Out the Proportion

question 2

Multiple Choice

The university conducts a study designed to find out the proportion of students who have conversational fluency in two or more foreign languages. The previous study provided the result of 7%. The test is carried out using data from a random sample of n = 72. In this sample, the number of students who speak two or more foreign languages is 10. Complete an appropriate hypothesis test with α = 0.05 and make a conclusion using the output from the Shiny app "Exact Binomial Test for One Proportion". ​ ​

• A) The proportion of students who speak two or more foreign languages has certainly remained the same.
• B) There is convincing evidence that the proportion of students who speak two or more foreign languages has decreased.
• C) There is no convincing evidence that the proportion of students who speak two or more foreign languages has increased.
• D) There is convincing evidence that the proportion of students who speak two or more foreign languages has increased.
• E) The sample is too small to make a conclusion.

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Definitions:

Inventory Period

The average time it takes for inventory to be sold and replaced over a period, indicating the efficiency of a company's inventory management.

Credit Sales

Sales in which the customer is allowed to pay at a later time, typically generating accounts receivable on the balance sheet.

COGS

Cost of Goods Sold; the direct costs attributable to the production of the goods sold by a company, including materials and labor.

Payables Turnover Rate

A financial ratio indicating how efficiently a company pays its suppliers, calculated by dividing total purchases by average accounts payable.