How would I write these in symbols? Please, correct me if I have made a mistake any where.

Thus, the null hypothesis (H₀) is threefold:

1.Caffeine will have not affect heart rate.

2.Exercise will have not affect heart rate.

3.The combination of caffeine and exercise will have not affect heart rate.

Similarly, the alternative hypothesis will also be threefold (H_a):

1.Caffeine will affect heart rate.

2.Exercise will affect heart rate.

3.The combination of caffeine and exercise will affect heart rate.