Mickey wants to fit a probit model using the data to obtain the LD50. The value of the empirical probit (ye) for the 70 gram dose is A. 4.77 A. 5.00 C. 5.52
Mickey wants to fit a probit model using the data to obtain the LD50. The value of the empirical probit (ye) for the 70 gram dose is A. 4.77 A. 5.00 C. 5.52
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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![9. 8. Mickey wanted to determine the lethal dose for rat poison. He then
observed a random sample of 350 rats equally divided among seven doses
(in grams) of rat poison. The data is given below:
Dose (in grams)
10
15
20
35
50
70
90
Number of rats
50
50
50
50
50
50
50
Number of rats killed
20
26
27
36
35
41
45
Table 3.2 Transformation of percentages to probits
% 0 1
2
3
4
5
6 7
8 9
0-
2.67 2.95 3.12 3.25 3.36 3.45 3.52 3.59 3.66
10 3.72 3.77 3.82 3.87 3.92 3.96 4.01 4.05 4.08 4.12
20 4.16 4.19 4.23 4.26 4.29 4.33 4.36 4.39 4.42 4.45
30 4.48 4.50 4.53 4.50 4.59 4.61 4.64 4.67 4.69 4.72
40 4.75 4.77 4.80 4.82 4.85 4.87 4.90 4.92 4.95 4.97
50 5.00 5.03 5.05 5.08 5.10 5.13 5.15 5.18 5.20 5.23
60 5.25 5.28 5.31 5.33 5.36 5.39 5.41 5.44 5.47 5.50
70 5.52 5.55 5.58 5.61 5.64 5.67 5.71 5.74 5.77 5.81
80 5.84 5.88 5.92 5.95 5.99 6.04 6.08 6.13 6.18 6.23
90 6.28 6.34 6.41 6.48 6.55 6.64 6.75 6.88 7.05 7.33
-
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
99 7.33 7.37 7.41 7.46 7.51 7.58 7.65 7.75 7.88 8.09
-
Mickey wants to fit a probit model using the data to obtain the LD50. The
value of the empirical probit (ye) for the 70 gram dose is
A. 4.77
A. 5.00
C. 5.52
D. 5.92](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6d1bf52e-33e8-4a88-aba6-54600abae93a%2F9aca1593-dec9-4ac6-9a43-dd62a5074dc4%2Fsoqva2_processed.png&w=3840&q=75)
Transcribed Image Text:9. 8. Mickey wanted to determine the lethal dose for rat poison. He then
observed a random sample of 350 rats equally divided among seven doses
(in grams) of rat poison. The data is given below:
Dose (in grams)
10
15
20
35
50
70
90
Number of rats
50
50
50
50
50
50
50
Number of rats killed
20
26
27
36
35
41
45
Table 3.2 Transformation of percentages to probits
% 0 1
2
3
4
5
6 7
8 9
0-
2.67 2.95 3.12 3.25 3.36 3.45 3.52 3.59 3.66
10 3.72 3.77 3.82 3.87 3.92 3.96 4.01 4.05 4.08 4.12
20 4.16 4.19 4.23 4.26 4.29 4.33 4.36 4.39 4.42 4.45
30 4.48 4.50 4.53 4.50 4.59 4.61 4.64 4.67 4.69 4.72
40 4.75 4.77 4.80 4.82 4.85 4.87 4.90 4.92 4.95 4.97
50 5.00 5.03 5.05 5.08 5.10 5.13 5.15 5.18 5.20 5.23
60 5.25 5.28 5.31 5.33 5.36 5.39 5.41 5.44 5.47 5.50
70 5.52 5.55 5.58 5.61 5.64 5.67 5.71 5.74 5.77 5.81
80 5.84 5.88 5.92 5.95 5.99 6.04 6.08 6.13 6.18 6.23
90 6.28 6.34 6.41 6.48 6.55 6.64 6.75 6.88 7.05 7.33
-
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
99 7.33 7.37 7.41 7.46 7.51 7.58 7.65 7.75 7.88 8.09
-
Mickey wants to fit a probit model using the data to obtain the LD50. The
value of the empirical probit (ye) for the 70 gram dose is
A. 4.77
A. 5.00
C. 5.52
D. 5.92
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