# Statistical concepts/ Deviation

**Tutor description**

1. Find the standardized variable z if x has Mean 12 and standard deviation 10. (Points : 1) Question 2. 2. Find the area under the standard normal curve to the right of z = 1.55. Round to four decimal places. Question 3. 3. Find the area under the standard normal curve to the left of z = 2.33 (Points : 1) Qestion 4. 4. Find the area under the standard normal curve over the interval z = −0.44 to z = 0.44. Compute probabilities using the standard normal table in Appendix B (Table 3). Round the answer to four decimal places. (Points : 1) Question 5. 5. Scores on a certain nationwide college entrance examination follow a normal distribution with a mean of 550 and a standard deviation of 100. Find the probability that a student will score over 680. Round your answer to four decimal places. (Points : 1) Question 6. 6. Scores on a certain nationwide college entrance examination follow a normal distribution with a mean of 600 5 more question. answer with explanation!!!!!!!!!!!!!!!!!

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