A Maker of Toothpaste Is Interested in Testing Whether the Proportion

question 59

Essay

A maker of toothpaste is interested in testing whether the proportion of adults (over age 18)who use its toothpaste and have no cavities within a six-month period is any different from the proportion of children (18 and under)who use the toothpaste and have no cavities within a six-month period.To test this,it has selected a sample of adults and a sample of children randomly from the population of those customers who use their toothpaste.The following results were observed.
Adults Children
Sample size 100 200
Number with 0 cavities 83 165
Based on these sample data and using a significance level of 0.05,what conclusion should be reached? Use the p-value approach to conduct the test.

Understand how changes in the money supply can impact the economy.

Recognize the importance of stable banking systems and the Federal Reserve's role in maintaining this stability.

Identify factors that contribute to stress-related illnesses in different individuals and settings.

Understand the concept of hardiness and its components (commitment, challenge, and control) in relation to stress resistance.

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Definitions:

Net Income

The total revenue minus expenses, taxes, and costs, representing the profit of a company over a specific time period.

Direct Method

The direct method in accounting refers to a way of reporting cash flows from operating activities by directly listing major classes of gross cash receipts and payments.

Indirect Method

A technique used in cash flow statement preparation where net income is adjusted for non-cash transactions and changes in working capital to arrive at operating cash flow.

Financing Activity

Transactions and events where cash is raised or repaid to investors, such as issuing stock, borrowing money, or paying dividends.