Please watch the following video: An example of proper sampling technique is discussed in the interview below of Dr. Jay Bhattacharya.

https://www.youtube.com/watch?v=k7v2F3usNVA

Also, for more resource information, please watch a more recent update from Dr. Bhattacharya:

Herd Immunity as a Coronavirus Pandemic StrategyLinks to an external site.

B. AFTER watching the uncommon knowledge video above, answer the following questions and submit them as a MS Word document or a PDF. Be sure to include your name and student ID in the header along with the title of the activity: "Extra credit on sampling and surveys".

This activity is worth A LOT of extra points [100] so you are strongly encouraged to complete it.

Extra credit activity on chapter 8: surveys and sampling [100]

1) [10] What is the population of interest in Dr. Bhattacharya's study?

2) [15] How did the researchers make a sampling frame for this study?

3) [25] What were the ingredients of the multistage sample study that makes this survey a properly randomized sample?

4) [25] Summarize the statistical results of the survey in terms of the proportion of people in Santa Clara county

a) exposed to the virus,

b) asymptomatic,

c) showing symptoms,

d) hospitalized,

e) recovered and

f) fatally infected

5) [10] Are the results of this study generalizable to Contra Costa county? Explain

6) [15] Find a list of other research in other counties or burroughs in the US that show either confirmatory or conflicting results to the survey described in Dr. Bhattacharya's Uncommon Knowledge research.