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Low dose High dose Total Tumor 4 7 11 No tumor 26 16 42 Total 30 23 53 Based on

ID: 3376906 • Letter: L

Question

Low dose

High dose

Total

Tumor

4

7

11

No tumor

26

16

42

Total

30

23

53


Based on the table, what is the probability that a rat who was given a high dose of the dye did NOT have a tumor?

7. The table below shows the results of an experiment used to test whether Red Dye #2 causes cancer in laboratory rats.

Low dose

High dose

Total

Tumor

4

7

11

No tumor

26

16

42

Total

30

23

53


Based on the table, what is the probability that a rat who was given a high dose of the dye did NOT have a tumor?

0.43 0.13 0.30 0.70

Explanation / Answer

Low dose High dose Total Tumor 4 7 11 No tumor 26 16 42 Total 30 23 53 Based on