Use the Normal to Model the Distribution of Sample Proportions

question 12

Multiple Choice

Use the Normal to model the distribution of sample proportions.
-According to a recent survey, about 33% of Americans polled said that they would
Likely purchase reusable cloth bags for groceries in order to reduce plastic waste.
Suppose 45 shoppers are interviewed a local supermarket. What is the probability that
Between 28% and 38% of shoppers say that they are likely to purchase reusable cloth
Bags for groceries?

• A) 0.2389
• B) 0.7611
• C) 0.4778
• D) 0.5222
• E) 0.3769

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Definitions:

Drive-Reduction Theory

A psychological motivation model that explains behavior as being driven by the desire to reduce needs and return to a state of homeostasis.

Yerkes-Dodson Law

A psychological principle stating that performance increases with arousal up to an optimal point, after which it decreases as arousal levels become too high.

Arousal Theory

A theory in psychology that suggests motivation is driven by levels of arousal, where individuals are motivated to maintain an optimal level of arousal.

Yerkes-Dodson Law

A psychological principle stating that performance increases with arousal only up to a point, after which performance decreases.