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In a given normal distribution the sample mean is 20.5 and the sample standard deviation is 5.4. Find the corresponding standard score of 18 The

  1. In a given normal distribution the sample mean is 20.5 and the sample standard deviation is 5.4. Find the corresponding standard score of 18
  2. The average score in a statistics and probability test is 83 with standard deviation 12. Find X, when z-1?
  3. A group of students in ABM compares their scores in their major subject for this semester. they find that the average score is 39 with the standard deviation of 6. Find the score when z-value is equal to 0.17.
  4. The weight of adults in one Barangay of South Cotabato approaches to normal distributions with a mean of 52.9 kg and standard deviation of 7.2 kg. Find the z-value when the weight is 48.5 kg.
  5. The weight of 10-year-old girls are known to be normally distributed with a mean of 33 kg and a standard deviation of 4 kg. Find the z-value of 10-year-old girls that weight 29 kg.

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