3. The numbers of medical coding errors on bills from 200 randomly selected hospitals were recorded and the results are given in the table below. Number of Errors 0 1 2 3 4 5 Frequency 5 12 31 40 38 29 22 14 5 Test the claim at the 5% significance level that a suitable model for these data is a Poisson distribution with a mean of 4. 8 >8 4

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Hi, I'd really appreciate your help with this question.  I'm not sure how to calculate the mean if the values greater than 8 are unknown. 

3. The numbers of medical coding errors on bills from 200 randomly selected hospitals were recorded and the results are
given in the table below.
0
1 2
3
4
Number of
Errors
Frequency 5 12 31 40 38
Test the claim at the 5% significance level that a suitable model for these data is a Poisson distribution with a mean of 4.
5
29 22 14
6
7
8 > 8
5
4
Transcribed Image Text:3. The numbers of medical coding errors on bills from 200 randomly selected hospitals were recorded and the results are given in the table below. 0 1 2 3 4 Number of Errors Frequency 5 12 31 40 38 Test the claim at the 5% significance level that a suitable model for these data is a Poisson distribution with a mean of 4. 5 29 22 14 6 7 8 > 8 5 4
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