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Introduction of statistics....................................


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Answered Same DayDec 25, 2021

Answer To: new doc XXXXXXXXXX Scanned by CamScanner Scanned by CamScanner Scanned by CamScanner Scanned by...

David answered on Dec 25 2021
127 Votes
The first region is P(Z<-1.04) = 0.5-0.3508 = 0.1492
The second region is P(Z>0.98) = 0.5-0.3365 = 0.1635
The third is P(-0.85= 0.3023+0.3925 = 0.6948
Q.No .1b
Area to right = 0.1379 means z is positive
Z corresponding to 0.5-0.1379 is +1.09
Area of left = 0.2090. i.e. z is negative.
Z corresponding to 0.5-0.2090 =0.2910 is -0.81
c) Fill in the blanks:
i) Central limit theorem
ii) Standard error = sigma/rt n
iii) Regression curve
Question no 2.
a)
X is normal (0,1)
P(X>1.01) = P(Z>1.01) = 0.1562
b) P(0.25c) 6
th
percentile of z means...
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