Garcia is preparing for his football game. The following table shows a probability model for the number of rushing yards that he will have next game. Number of rush yards| Probability :-: | :-: | $0-39$ | $\dfrac18$ $40-79$| $\dfrac14$ $80-119$ |$\dfrac12$ $120+$ |$\dfrac18$ **Is this a valid probability model?** [[☃ radio 1]]