A Survey Claims That 9 Out of 10 Doctors Recommend $\alpha$

question 156

Multiple Choice

A survey claims that 9 out of 10 doctors recommend aspirin for their patients with headaches.To test this claim against the alternative that the actual proportion of doctors who recommend aspirin is less than 0.90, a random sample of 100 doctors was selected.Suppose that the test statistic is - 2.20.Can you conclude that H0 should be rejected at the (a) $\alpha$ = 0.10, (b) $\alpha$ = 0.05, and (c) $\alpha$ = 0.01 level of Type I error?

• A)(a)yes; (b)yes; (c)yes
• B)(a)no; (b)no; (c)no
• C)(a)no; (b)no; (c)yes
• D)(a)yes; (b)yes; (c)no

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Definitions:

Sulfur Dioxide Emissions

Refers to the release of sulfur dioxide gas into the atmosphere, primarily from burning fossil fuels, which can cause environmental and health problems.

Excise Taxes

Taxes charged on the sale of specific goods and services, such as alcohol and tobacco, often used as a tool for discouraging their consumption.

Sales Taxes

Taxes levied on the sale of goods and services, normally calculated as a percentage of their price.

Marginal Social Benefit

The additional benefit to society as a whole from an increase in the consumption or production of one more unit of a good or service.