A Simple Random Sample of 100 of a Certain Popular

question 100

Multiple Choice

A simple random sample of 100 of a certain popular model car in 2003 found that 20 had a certain minor defect in the brakes.A simple random sample of 400 of this model car in 2004 found that 50 had the minor defect in the brakes.Let p₁ and p₂ be the proportion of all cars of this model in 2003 and 2004,respectively,that actually have the defect.What is a 90% confidence interval for p₁ - p₂?

• A)0.075 ± 0.071
• B)0.075 ± 0.085
• C)0.075 ± 0.112
• D)0.079 ± 0.071

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Definitions:

Corporate Insurance

A type of insurance designed to protect businesses from potential losses due to unforeseen circumstances, including property damage, liability claims, and business interruption.

Problem-solution

rephrased: An approach that involves identifying a specific issue and subsequently proposing one or more solutions to address that issue, widely used in sales, engineering, and policy-making.

Problem-solution

A method of structuring communication where a problem is identified and then resolved, commonly used in sales and marketing.

Proposal

A detailed plan or suggestion, often a document put forward for consideration to initiate a project or sale.