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:

Deltoid

A large, triangular muscle covering the shoulder joint that is responsible for lifting the arm and giving the shoulder its range of motion.

Abducts

Refers to the movement of a body part away from the central axis or midline of the body.

Triangle

A polygon with three edges and three vertices, the simplest form of polygon in geometry.

Pectoralis Major

A significant muscle located in the upper part of the chest, aiding in arm and shoulder motion.