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QUESTION
Scores on a certain exam are normally distributed with a mean of 90 and a variance of 25. What is the probability of obtaining a score less than 80?
Scores on a certain exam are normally distributed with a mean of 90 and a variance of 25. What is the probability of obtaining a score less than 80?
P0? 3 60.527)Normal Distribution, ii = iii], e = 5, n = 90 Sisss this is ssstisssus disis-ihstiss, Pit—f 2;- 60.527) = P{_ is 60.527}5: . . _ i - Fe _ - itwe convert this to standard normal...