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Question 1 · 8 marks
Calculator allowed
Edexcel 9FM0
The counts
0
,
1
,
2
,
3
,
4
,
5
+
0,1,2,3,4,5+
0
,
1
,
2
,
3
,
4
,
5
+
have frequencies
20
,
25
,
17
,
11
,
5
,
2
20,25,17,11,5,2
20
,
25
,
17
,
11
,
5
,
2
in 80 observations. The proposed model is
P
o
(
1.5
)
\mathrm{Po}(1.5)
Po
(
1.5
)
.
(a)
State how the last categories should be pooled.
2 marks
Say your answer out loud or jot it down, then compare.