answers for statistic

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O
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n u m b e r o f t r ia ls
O
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it y o f s u c c e s s in e a c h in d iv id u a l t r ia l
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is t h e m in im u m
s c o re a s t u d e n t n e e d s t o b e c o n s id e re d ?
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O
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a v e ra g e n u m b e r o f s u c c e s s e s
O
The
t o t a in u m b e r o f tr ia ls in t h e e x p e rim e n L
O
The
p ro b a b ilit y o f h a v in g x q i r r m
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u e s t io n 2 3
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u e s t io n 2 4

T h is
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O
N
O
p o is s o n
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u e s t io n 2 5
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sa m
o f a ra n d o m
.
v a r ia b i
e is t h e lo n g
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b a b ilit y D is t rib u tio n
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O
The
O
lt c o
n s is ts o f s e v e ra l t ria i
s
O
The
a c t u a io u t c o m e s o f th e t ria ls a re
p re d ic ta b le
O
The
a c t u a l o u t c o m e s o f t h e t r ia ls a r e n o t
p re
s a r e p r e d ic ta b le
p o s s ib le o u tc o m e s o f t h e t r ia i
.
O
N
o
.
Be ca u se
t h e p r o b a b ilit ie s a re d e c im a ls
O
N
o
.
Be ca u se
th e s u m
O
Ye
O
N
s,
o
.
beca
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ic t a
le
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.
o f t h e p ro b a b ilit ie s is n o t
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p o s it iv e n u m b e r s
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W ha t
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o f t h e ite m s p ro d u c e d a re d e fe c tiv e
.
is t h e p ro b a b ility t h a t in a b a tc h o f 1 0 ite m s a t le a s t 2 w ill b e d e fe c tiv e ?
0
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u e s t io n 3 2
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t is t h e p ro b a b ilit y o f s e llin g a t m o s t 1 7 b o o k s in a n h o u r ?
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D
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u e s t io n 3 3
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is t h e p r o b a b ilit y o f w a it in
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u e s t io n 3 4
T he
c o o k in g t im e f o r a d is h is u n ifo rm ly d is t r ib u te d b e tw e e n 1 0 a n d 2 0 m
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0
is t h e p ro b a b ilit y t h a t t h e c o o k in g w ill t a k e b e tw e e n 1 4 a n d 1 6 m i
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The
u d e n ts in a n e x a m
g ra d e s o f s t
d e v ia t io
W
n o f 5
a re n o rm a li
y d is t r ib u t e d w it h a m e a n o
.
2 a n d 9 0 ?
n a t p e rc e n t a g e o f g ra d e s a re b e tw e e n 7
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In
a c o o k ie f a c to ry
,
th e
w e ig h t s o f c o o k ie s a re n o rm a lly d is t rib u te d w it h a m e
s ta n d a rd d e v ia t io n o f 2 g
If th e
D
5 %
j
h e a v ie s t c o o k ie s a re re e c te d
q
u e s t io n 3 8
O
n a m a th e x a m
d e v ia t io n
W ha t
.
o f 3
, w
ha t
is t h e le a s t w e ig h t fo r a c o o k ie
t h e g ra d e s a re n o r m a lly d is t rib u te d w it h a m e a n o f 8 0 a n d a
,
is t h e m in im u m
g ra d e re q u ire d t o b e in t h e t o p 1 %
o f t h e c la s s ?
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s o f a ra n d o m
@
D
D is c r e t e
–
–
–
_
_
_
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p ro c e s s o r a ra n d o m
P ro
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.
b a b iit y
q
u e s t io n 4 0
Su
p p o s e t h a t t w o f a ir d ic e a r e ro lle d a n d t h e ir n u m b e rs a r e a d d e d
T he
r e s u lt in g n u m b e r is a
O
C
o n t in u o u s R a n d o m
O
Q
u a lit a t iv e
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