Find the Probability of at Least 2 Girls in 10

question 139

Multiple Choice

Find the probability of at least 2 girls in 10 births. Assume that male and female births are equally likely and that the births are independent events.

• A)0.011
• B)0.945
• C)0.044
• D)0.989

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Definitions:

Partial Reinforcement

A conditioning principle where only some of the responses made are followed by reinforcement, leading to more resistant behavior to extinction.

Unpredictable Number

A number whose value cannot be anticipated or determined due to its random or variable nature.

Variable-Ratio Schedule

In operant conditioning, a reinforcement schedule that reinforces a response after an unpredictable number of responses.

Intermittent Reinforcement

A learning process in which a response is rewarded only part of the time, leading to more resilient behaviors.