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BurningAshe BurningAshe
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6 years ago
For a normal distribution,
 
  a. Whatz-score separates the highest 25 from the rest of the scores?
  b. Whatz-score separates the highest 60 from the rest of the scores?
  c. Whatz-score separates the lowest 30 from the rest of the scores?
  d. Whatz-score separates the lowest 80 from the rest of the scores?

Question 2

For each of the following z-score locations in a normal distribution, determine whether the tail is on the left side or the right side of the distribution and find the proportion that is located in the tail.
 
  a. z= +1.75
  b. z= +0.80
  c. z= 0.70
  d. z= 1.65

Question 3

If one score is randomly selected from a normal distribution with  = 100 and  = 20, the probability of obtaining a score between X = 80 and X = 120 is p = 0.3413.
 
  Indicate whether the statement is true or false

Question 4

If one score is randomly selected from a normal distribution with  = 100 and  = 20, the probability of obtaining a score between X = 90 and X = 100 is p = 0.3085.
 
  Indicate whether the statement is true or false
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transfertransfer
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6 years ago
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BurningAshe Author
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#2
6 years ago
I'm still confused, but thanks for answering correctly
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