Consider the experiment of presenting a standardized IQ test Variable x is the score obtained, which is normally distributed with mean 105 and standard deviatio 9 If a group of 100 students presents the test, what is the probability that the average of this group is less than 92 points ...

Consider the experiment of presenting a standardized IQ test. Variable x is the score obtained, which is

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Consider the experiment of presenting a standardized IQ test. Variable x is the score obtained, which is normally distributed with mean μ = 105 and standard deviatio σ = 9. If a group of 100 students presents the test, what is the probability that the average of this group is less than 92 points?