From z-test:

We failed to reject the null hypothesis that there is no difference between the accuracy of weather forecast by Yahoo and AccuWeather. And reject the alternative hypothesis that there is a difference between the

accuracy of weather forecast by Yahoo and AccuWeather.

From Chi-square Test for association associations between categorical variables:

We failed to reject the null hypothesis that there is no association between weather forecast apps (Yahoo Weather andAccuWeather) and the weather forecast accuracy. And we rejected the alternative hypothesis that there is an association between weather forecast apps (Yahoo Weather andAccuWeather) and the weather forecast accuracy.

 Conclusion: There is no statistical difference between the accuracy of weather forecast by Yahoo and AccuWeather.