Reference: Analysis of experience plans MAT3378

Question: 1500 insects were divided into 6 groups each containing 250 individuals. Insects in each group were exposed to a fixed dose of a toxic substance and obtained the following results:

X=Log(D)= Dose logarithm.

	Group 1	Group 2	Group 3	Group 4	Group 5	Group 6
Number Record of death	28	53	93	126	172	197
Number Total	250	250	250	250	250	250
Log(D)=X	1	2	3	4	5	6

a) Make a logistical regression of this data, by doing all the calculations manually.

b) Redo the same regression using the R software.

c) Validate both results.

d) Estimate the percentage of deaths for a group of which X=4.5.