Question

1. You are doing a study on how dandelions seeds settle and grow in lawns. You want to know if they grow randomly throughout the lawn, or if their distribution in the lawn is not random, but somehow grouped or clumped. Which statistical test would you use and why?

2. You are studying whether income (i.e. poverty) influences how likely one is to catch a serious case (needs hospitalization) of COVID-19. Which statistical test would you use and why?

3. You are raising chickens on a new, experimental diet. You want to know whether this diet helps them grow larger than chickens raised on the normal diet. Which statistical test would you use and why?

Answer 1

Que.1

We use chi-square test of goodness of fit to test whether any distribution fits the growth of dandelions seeds.

Que.2

Here we want to test whether there exist any relationship between the income and covid 19 case.

Hence we use t test for correlation coefficient.

Que.3

t test for equality of two means.