A Survey Claims That 9 Out of 10 Doctors Recommend

question 10

Multiple Choice

A survey claims that 9 out of 10 doctors recommend aspirin for their patients with headaches. To test this claim, a random sample of 100 doctors results in 83 who indicate that they recommend aspirin. Which of the following tests will you perform?

• A) t test for mean
• B) pooled-variance t test
• C) Z test for proportion
• D) separate-variance t test

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Definitions:

Technical Analysts

Financial experts who evaluate securities by analyzing statistics generated by market activity, such as past prices and volume, to forecast future price movements.

Trendlines

Lines drawn on stock or financial charts that indicate the general direction of price movement, used by traders to assess market trends and make decisions.

Resistance Levels

A price level at which selling is thought to be strong enough to prevent the price from rising further.

Chartists

Analysts who use historical price and volume data to predict future market movements based on patterns and trends, also known as technical analysts.