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Q1.
 !"
#""
Ans
$"""%&
'()*"+(+,(--.)*+(+,(/--0
 ()*+(+,(/--0&
**.)0&1+,(/-20&
Q2.
%3455 34"/% !%
%34
Ans
67"
8("-055
97(-0
6"(-0/
67"0:0;*"+(+9,(-<6( /-
'(;.-0(*55-++9,(/-
05+=0/5/
0'(:./5/->96
0/5
Q3.
#" #"%5%% !%/&%%3"
%7"?
Ans
67"
8(%-0510=5
97(@%,-0@5110&=
67"0:0;*"+
'(;.0-'(;*5-
'(;.0/&-0'(;0/&*5-0'(;A0/5-
'(;A0/5-0(/5*=5-+&B
0&+&B0/&/
0'(:A/&/->96
0=55
93,"!/&'(;.0/&-0/C'(;A0/5-0/C=550&=5
6 "%
Q4.
%D9"&&=%&" 3%3
?
Ans
67"
8("-0/5
97(-0//=&
'(;A-'(;*5-
'(;A-0'(;A*5-0'(;A/==5-
'(;A/==5-0(/==5*/5-+//=&
0/=+//=&0/B/
0'(:A/B/->96
05BB
Q5.
"*33E
= &5 5  
5& 5 B &B 5
55  5 = &&
= B5 5 // &5
 & = & /
& 5

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%%)%"
Step 1CE","
Step 2 : E"F
G3H"

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Q1.The average thickness of books on a library shelf is 8.3 centimeters. The standard deviation is 0.6 centimeter. If 20% of the books are oversized, find the minimum thickness of the oversized books on the library shelf. Assume the variable is normally distributed. AnsValue of z to the cumulative probability above of 0.20 from normal table is 0.84P( x-u/ (s.d/sqrt(n) ) > x - 8.3/ (0.6/sqrt(1) ) = 0.8That is, ( x - 8.3/ (0.6/sqrt(1) ) = 0.84--> x = 0.84 * 0.6/sqrt(1) + 8.3 = 8.804Q2.The average repair cost of a microwave oven is $55, with a standard deviation of $8. The costs ar ...
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