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Answered Same DayFeb 11, 2021HA1011

Answer To: open the pdf file

Pooja answered on Feb 11 2021
128 Votes
1)
    x
    y
    x^2
    y^2
    xy
    10
    20
    100
    400
    200
    20
    15
    400
    225
    300
    30
    10
    900

    100
    300
    30
    11
    900
    121
    330
    40
    9
    1600
    81
    360
    80
    8
    6400
    64
    640
    90
    6
    8100
    36
    540
    90
    4
    8100
    16
    360
    120
    2
    14400
    4
    240
    130
    1
    16900
    1
    130
    sum x
    sum y
    sum x^2
    sum y^2
    sum xy
    n
    640
    86
    57800
    1048
    3400
    10
a)
Step 1:
slope,
    
Step 2:    
intercept,
    
Step 3:
regression equation:    
b)
correlation coefficient,
    
Coefficient of determination, R^2 = -0.923246^2
R^2 =     0.852
2)
    public transport
    Ferry
    Bus
    Train
    Total
    Yes
    70
    84
    126
    280
    No
    182
    208
    130
    520
    Total
    252
    292
    256
    800
a)    
P(bus)    
=292/800    
=0.365    
    
b)    
P(No public)    
0.65    
    
c)    
P(train|puclic yes)    
P(train AND public Yes)/P(yes)    
=(126/800)/(280/800)    
0.45    
d)    
P(ferry|public...
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