A Survey Claims That 9 Out of 10 Doctors Recommend

question 61

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 results in 83 who indicate that they recommend aspirin. The value of the test statistic in this problem is approximately equal to

• A) - 0.07.
• B) - 2.33.
• C) - 4.12.
• D) - 1.86.

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Definitions:

Sensorimotor

Relating to or involving both sensory and motor functions or pathways.

Preoperational

A stage in Jean Piaget’s theory of cognitive development where children aged 2 to 7 years old are able to use symbols and language but do not yet understand concrete logic.

Concrete Operational

A stage in Piaget's theory of cognitive development (typically age 7-12) where children gain the ability to think logically about concrete (physical and visible) events.

Ejaculation

Ejaculation is the discharge of semen from the male reproductive tract as a result of sexual arousal.