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1. A distribution has a mean of 40 and a standard deviation of 5. 68% of the distributioncan be found between what two numbers? A. 30 and 50 B. Oand 45 C. 35 and 45 D. Oand 68 2. A distribution has a mean of 30 and a standard deviation of 4. Approximately 95% ofthe distribution can be found between what two number A. 26 and 30 B. 26 and 34 C. 22 and 38 D. 18 and 42 3. A number 1.5 standard deviation below the mean has a score of A. 3 B. -1.5 C. 1.5 D. -3 4. A distribution has a mean of 16 and a standard deviation of 6. What is the Z score thatcorresponds with 25? A. 1 B. 1.5 C. 2 D. 2.5 5. A distribution has a mean of 20 and a standard deviation is 5. Use the table todetermine the proportion of the score(area ) below 6. A. 0.9918 B. 0.4918 C. 0.0082 D. 0.5000 II. Compute for the corresponding Z-score. State whether each raw score lies BELOW orABOVE the mean. Name: Date: 1, X = 50, s = 5, X = 40 Grade Section: Score: 2. X = 40, 0 = 8, u = 52 3. X = 36, s = 6, X = 28 ACTIVITY 1 4. X = 82, 0 = 15, H = 75 III. Find the mean and standard deviation. 1. 95% of students at school weigh between 52 kg and 90 kg. Assuming this data is normally distributed, what are the mean and standard deviation? 2. 68% of the marks in a test are between 41 and 54. Assuming this data is normally distributed, what are the mean and standard deviation? IV. Find the percentile using the standard normal table. 1. For infant girls, the mean body length at 10 months is 72 centimeters with a standard deviation of 3 centimeters. Suppose a girl of 10 months has a measured length of 67 centimeters. How does her length compare to other girls of 10 months