State the Empirical Rule for a normal distribution.
Answer to relevant QuestionsOn a police sergeant's examination, the historical mean score was 80 with a standard deviation of 20. Four officers who were alleged to be cronies of the police chief scored 195, 171, 191, and 189, respectively, on the test. ...Find the standard normal area for each of the following. Sketch the normal curve and shade in the area represented below. a. P (Z < – 1.96) b. P (Z > 1.96) c. P (Z < 1.65) d. P (Z > – 1.65) Find the associated z-score or scores that represent the following standard normal areas. a. Middle 50 percent b. Lowest 5 percent c. Middle 90 percent On January 1, 2011, a new standard for baseball bat "liveliness" called BBCOR (Ball-Bat Coef-cient of Restitution) was adopted for teams playing under NCAA rules. A higher BBCOR allows the ball to travel farther when hit, so ...For a continuous PDF, why can't we sum the probabilities of all x-values to get the total area under the curve?
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