Solve the Problem. -A Final Exam in Math 160 Has a Mean of a Mean

question 76

Multiple Choice

Solve the problem.
-A final exam in Math 160 has a mean of 73 with standard deviation 7.8. If 24 students are randomly selected, find the probability that the mean of their test scores is less than 70.

• A)0.9699
• B)0.0301
• C)0.1006
• D)0.0278

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Definitions:

Posttraumatic Stress Disorder

A psychiatric disorder that may occur in people who have experienced or witnessed a traumatic event, involving persistent frightening thoughts and memories of the ordeal.

Increased Anger

A heightened state of irritation or annoyance, which may result from stress, frustration, or underlying issues.

Captivity

The condition of being imprisoned or confined, often involving the loss of personal freedom and autonomy.

Experiencing Avoidance

Actively steering clear of thoughts, feelings, or situations that are reminders of a traumatic event, often seen in individuals with PTSD.