Sate the null and hypothesis of the following problem statements.

1. Is there a significant difference among the sales of three different brands of shampoo?

1.1 NULL HYPOTHESIS:

1.2 ALTERNATIVE HYPOTHESIS:

2. Is there a significant relationship between the weight and height of PBA players?

1.1 NULL HYPOTHESIS:

1.2 ALTERNATIVE HYPOTHESIS:

3. Is there a significant difference between the initial weight and final weight of females?

1.1 NULL HYPOTHESIS:

1.2 ALTERNATIVE HYPOTHESIS:

4. Is there a significant relationship between the sex and severity of symptoms of COVID-19 positive cases?

1.1 NULL HYPOTHESIS:

1.2 ALTERNATIVE HYPOTHESIS: