Suppose a Research Firm Conducted a Survey to Determine the Average

question 10

Multiple Choice

Suppose a research firm conducted a survey to determine the average amount of money steady smokers spend on cigarettes during a week. A sample of 100 steady smokers revealed that the sample mean is $20 and the sample standard deviation is $5. What is the probability that a sample of 100 steady smokers spend between $19 and $21?

• A) 0.4772
• B) 0.0228
• C) 0.9544
• D) $20

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Definitions:

Behavioral Treatment

A range of therapies designed to change harmful behaviors using reinforcement and cognitive techniques.

Fear of Dogs

Also known as cynophobia, it is an intense and persistent fear of dogs, often resulting from a negative experience or conditioning.

Blood-injection-injury Phobias

An intense irrational fear of blood, injections, or injuries that can result in physical reactions such as fainting.

Applied Tension Technique

Technique used to treat blood-injection-injury type phobias in which the therapist teaches the client to increase his or her blood pressure and heart rate, thus preventing the client from fainting.