Answers for Chapter 1

(A stands for answer)

• A6. Null hypothesis (H0): There are no risk factors for cardiovascular disease among the studied parameters.

  Alternate hypothesis (Ha): Risk factors are present among the studied parameters.

• A7. This question would have no concrete hypothesis. Instead, the overall goal of the study is to identify the genes that are highly expressed in lung cancer tissues..
• A8. We can re-formulate this question into three potential options based on different levels of similarity:
  • The mouse-human genome similarity is low (0-50%).
  • The mouse-human genome similarity is medium (50-90%).
  • The mouse-human genome similarity is high (>90%).
• A9. To answer this research question, we can formulate it as follows:

  Are Ca, Mg, and K concentrations higher in locality A compared to locality B?

• A10. Null hypothesis (H0): Water temperature does not affect plankton.

  Alternate hypothesis (Ha): Water temperature affects plankton organisms.

Keep practicing yourself!