Please provide a solutionwith solution steps explained.

There are two farmers (A,B) and each farmer has a huge garden of orange trees.

There are 1000 orange trees in each garden and we know from previous years that a single orange tree yields around 300 oranges.

The farmers want to be %95 confident that their total yield will not be under 30 Tons and they want to see if the right harvest time has come.

So they grab 50 oranges each as sample.

Sample oranges of farmer A weigh 108 grams on average with a standard deviation of 35.

Sample oranges of farmer B weigh 105 grams on average with a standard deviation of 19.

Can farmers A and B be %95 confident that the total yield will not be under 30 Tons.

Please give your answers for A and B separately.

Thanks.