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Part IV: Finding exact probabilities. FOR EACH, DRAW A PICTURE AND USE THE Z-TABLE ON CARMEN. 20....

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Basic Math

Part IV: Finding exact probabilities. FOR EACH, DRAW A PICTUREAND USE THE Z-TABLE ON CARMEN.

20. The Z-table always gives you the probability of beingbetween ________ and  the number you are looking up.

21. The number you are looking up should have ______digit(s)before the decimal point and _____ digit(s) after the decimalpoint.

22. Suppose the Z value is 2.00. Which row and column do youlook in to find P(0< Z < 2.00)?

            

23. How do you find P(Z < 2.00)? (Note you have to do this in2 parts. Hint: What is the probability that Z is less than 0? Usethat as one of the parts)

            

24. How do you find P(Z > 2.00)? (Note the table does nothave “>” probabilities. If half of the probability is greaterthan 0, how much of it must be greater than 2? Draw a picture.)

            

25. a. What is P(-1.26  < Z <0)?  (Note the Z table has no negative values. UseSYMMETRY to do this.)

25.  b.  Find P(Z > -1.26)

25.  c. Find P(Z < -1.26)

26.a   Now find P(-1 < Z < 2). Do this intwo parts and sum them together. Use symmetry to get the leftpart.

26b. Find P(1

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