normal iq score

The scores made by candidates in a certain test are normally distributed with mean 500 and standard deviation 100. What percentage of candidates received scores greater than 700? => 2.28% or 2.82% or 47.72% or 47.27%..

The scores made by candidates in a certain test are normally distributed with mean of 500 and standard deviation of 100. What percentage of candidates received scores between 400 and 700? => 88.15% or 81.85% or 88.51% or 85.81%..

In an aptitude test conducted to qualify for a job, the scores given were normally distributed with a mean of 75 and a standard deviation 8. If only top 15% were to be selected, then find the cut - off scores. => 83.8 or 88.3 or 83.3 or 85..

Scores in statistics obtained by students of a class are normally distributed. If 12.5% obtain 60% scores and above and 39% less than 30, then find the mean and the standard deviation of the scores. => 36.55, 20.98 or 35.89, 28.90 or 39.85, 29.80 or 35.88, 20..

An organization conducted a test for a group of students, whose scores are normally distributed with mean 70 and standard deviation 3. Find the probability that the score of a particular student is greater than 67. => 0.8413 or 0.1587 or 0.3413 or 0.5000..

Let X denote the number of scores on a test. If X is normally distributed with a mean of 90 and a standard deviation of 10, find the probability that X is not less than 70. => 0.4772 or 0.7472 or 0.7972 or 0.9772..

Past records indicated that the variance of scores in final exams of the high school students was 6.16. New techniques were adopted for teaching and it was observed that in a random sample of 80 students, the variance of scores after the final exam is 6.42. Find the chi-square t..

Tensions of attending the classes, examinations and tests. Low IQ feeling. Fear about failure in examination. Fear about low score. Fear and concern about a future career. Misconceptions about teachers. Due to many problems faced during adolescence, the boys and gir..