I think it’s c, please check if correct. Also having trouble with question 2 : How many bacteria that were pink and antibiotic resistant did we expect to find under the null hypothesis?

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Author:Amos Gilat
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I think it’s c, please check if correct. Also having trouble with question 2 : How many bacteria that were pink and antibiotic resistant did we expect to find under the null hypothesis?
In your microbiology class, you are interested in whether antibiotic resistance is dependent upon the bacterial color. You create 205 different petri dishes and record the following traits for each one:

| Trait                     | Red | Pink | White |
|---------------------------|-----|------|-------|
| Antibiotic Resistant      | 21  | 3    | 45    |
| Normal Wildtype           | 23  | 61   | 52    |

Test statistic: 124.68

Is antibiotic resistance independent of color?

Answer the following 3 questions with this information.

---

What is the correct analysis for this question?

- ⬜ Odds ratio analysis
- ⬜ Chi-squared goodness of fit
- ⬜ Unpaired t-test
- ⬜ One-sample t-test
- ⬜ Chi-squared independence
Transcribed Image Text:In your microbiology class, you are interested in whether antibiotic resistance is dependent upon the bacterial color. You create 205 different petri dishes and record the following traits for each one: | Trait | Red | Pink | White | |---------------------------|-----|------|-------| | Antibiotic Resistant | 21 | 3 | 45 | | Normal Wildtype | 23 | 61 | 52 | Test statistic: 124.68 Is antibiotic resistance independent of color? Answer the following 3 questions with this information. --- What is the correct analysis for this question? - ⬜ Odds ratio analysis - ⬜ Chi-squared goodness of fit - ⬜ Unpaired t-test - ⬜ One-sample t-test - ⬜ Chi-squared independence
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