-2.31 -1.61 -1.43 -1.38 -1.10 -1.10 -0.73 -0.63 -0.59 -0.45 -0.26 -0.08 -0.03 0.
ID: 2927690 • Letter: #
Question
-2.31
-1.61
-1.43
-1.38
-1.10
-1.10
-0.73
-0.63
-0.59
-0.45
-0.26
-0.08
-0.03
0.02
0.02
0.16
0.20
0.20
0.20
0.44
0.48
0.48
0.53
0.81
0.90
0.95
1.32
1.37
1.42
2.52
3. LET’S SEE IF ANY OF THE ABOVE 30 DATA POINTS WOULD BE CONSIDERED “UNUSUAL”. HOW?
WE MUST DECIDE AT WHAT SIGNIFICANCE LEVEL WE WOULD CONSIDER A DATA POINT “UNUSUAL”. IF WE CHOSE A SIGNIFICANCE LEVEL OF 10% THAT MEANS THAT A DATA POINT WOULD HAVE TO HAVE A POSITIVE Z-VALUE (STANDARD DEVIATION) THAT CORRESPONDED TO A TABLE AREA OF 0.9000 TO THE LEFT (SINCE THIS DATA POINT IS IN THE 10% AREA IN THE FAR RIGHT TAIL. OR, IF THE DATA POINT HAD A NEGATIVE Z-VALUE ITS VALUE WOULD HAVE TO CORRESPOND TO A TABLE AREA OF 0.10 (10%) IN THE FAR LEFT TAIL OF THE CURVE.
A SIGNIFICANCE LEVEL OF 5% WOULD NEED A +Z VALUE CORRESPONDING TO A TABLE AREA OF 0.9500 TO THE LEFT (LEAVING 0.0500 TO THE FAR RIGHT). OR A –Z-VALUE CORRESPONDING TO A TABLE AREA OF SIMPLY 0.0500 TO THE LEFT IN THE FAR LEFT TAIL.
a) FILL IN THE BLANKS: A SIGNIFICANCE LEVEL OF 1% WOULD NEED A +Z VALUE CORRESPONDING TO A TABLE AREA OF ________ TO THE LEFT (LEAVING ________ TO THE FAR RIGHT). OR A –Z-VALUE CORRESPONDING TO A TABLE AREA OF SIMPLY _________ TO THE LEFT IN THE FAR LEFT TAIL
b) IN QUESTION (2) YOU DETERMINED THE GENERAL CRITICAL Z-VALUES FOR SIGNIFICANCE LEVELS OF +10%, +5% AND +1%, SO COMPARE YOUR STANDARDIZED DATA TO THEM AND LIST YOUR Z-VALUES AND ORIGINAL X-VALUES THAT ARE “UNUSUAL” AT THESE SIGNIFICANCE LEVELS. LIST ANY “UNUSUAL” VALUES. SO WHAT?
-2.31
-1.61
-1.43
-1.38
-1.10
-1.10
-0.73
-0.63
-0.59
-0.45
-0.26
-0.08
-0.03
0.02
0.02
0.16
0.20
0.20
0.20
0.44
0.48
0.48
0.53
0.81
0.90
0.95
1.32
1.37
1.42
2.52
Explanation / Answer
a) A SIGNIFICANCE LEVEL OF 1% WOULD NEED A +Z VALUE CORRESPONDING TO A TABLE AREA OF 0.99 TO THE LEFT (LEAVING 0.01 TO THE FAR RIGHT). OR A –Z-VALUE CORRESPONDING TO A TABLE AREA OF SIMPLY 0.01 TO THE LEFT IN THE FAR LEFT TAIL
b)
for this part detail of question 2) is required . please revert so that I can update.
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