73.1 |
( a ) |
( i ) |
1050 USD |
( ii ) |
810 USD |
||
( iii ) |
450 USD |
||
( b ) |
SSres |
�
33900
|
|
( c ) |
87.2 % of the variability of |
||
the data is explained by | |||
the regression model . | |||
73.2 |
( a ) |
( i ) |
74.6625 marks |
( ii ) |
78.9625 marks |
||
( iii ) |
74.0625 marks |
||
( b ) |
SSres |
�
131
|
|
( c ) |
63.2 % of the variability of |
||
the data is explained by | |||
the regression model . | |||
73.3 |
( a ) |
( i ) |
9231 |
( ii ) |
7200 |
||
( iii ) |
11264 |
||
( b ) |
SSres |
�
60000
|
|
( c ) |
Model 1 |
||
73.4 |
( a ) |
( i ) |
212 |
( ii ) |
192 |
||
( iii ) |
155 |
||
( b ) |
SSres |
�
2080
|
|
( c ) |
Model 2 |
||
( b ) |
( i ) |
2 R �
0.967
|
( ii ) |
96.7 % of the variability of the data is explained by the regression model . |
( b ) |
( i ) |
2 R �
0.360
|
|
( ii ) |
36.0 % of the variability of the data is explained by the regression model . |
||
74.3 |
( a ) |
( i ) |
2 y � 0.25x �
2.25x �
1
|
( ii ) |
2 R �
0.967
|
|
( b ) |
SS |
�
1
|
( ii ) |
2 R �
0.99957
|
|
( b ) |
SSres |
�
0.0136
|
75.1 |
( a ) |
H
0
: The data follows a
Poisson distribution with mean 2 .
|
|
( b ) |
17.1 |
||
( c ) |
4 |
||
( d ) |
55.1 |
||
( e ) |
The null hypothesis is |
||
|
2 rejected as
�
|
� 7.779
.
|
||
75.2 |
( a ) |
H
0
: The data follows a
|
Binomial distribution with |
||
parameters B ( 5 , 0.6 ) . |
( b ) |
( i ) |
1.024 |
|
( ii ) |
4 |
||
( c ) |
24.8 |
||
( d ) |
The null hypothesis is |
||
|
2 rejected as
�
|
� 9.488
.
|
||