Mathematics, 12.05.2020 02:57 asdf334asdf334

The number of hours spent watching television by students in the week before final exams has
a normal distribution with a Standard deviation of 4.5 hours. A random sample of 30 students
was taken. What is the probability that standard deviation exceeds 3.5 hours?

Answers: 2

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The number of hours spent watching television by students in the week before final exams has
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