Mathematics, 22.02.2020 04:16 domie5910
The score on an exam from a certain MAT 112 class, X, is normally distributed with μ=77.7 and σ=9.6.
NOTE: Assume for the sake of this problem that the score is a continuous variable. A score can thus take on any value on the continuum. (In real life, scores are often treated as if they were continuous values but are actually discrete in most cases.)
(a) Write the event ''a score over 65.7'' in terms of X:
(b) Find the probability of this event:
(c) Find the probability that a randomly chosen score is greater than 86.7:
(d) Find the probability that a randomly chosen score is between 65.7 and 86.7:
Answers: 2
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Me d is also an option but i couldn't get it in the picture
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The score on an exam from a certain MAT 112 class, X, is normally distributed with μ=77.7 and σ=9.6....
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