A Survey Claims That 9 Out of 10 Doctors Recommend

question 82

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) -1.67
• B) -2.33
• C) -1.86
• D) -0.14
• E) -2.58

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Definitions:

Stress

A physical or psychological response to internal or external pressures, often resulting in physical, mental, or emotional strain or tension.

Flexibility

The quality of bending easily without breaking, referring to the range of movement in a joint or series of joints.

Intervertebral Disks

The cartilage pads that sit between the vertebrae in the spine, acting as shock absorbers and allowing for flexibility.

Synovial Joints

Joints encased in a fluid-filled capsule, allowing for wide range of motion and flexibility, such as knees and elbows.