To calculate the missing value (K), you need to know the specific value of X (the number of bananas sold in a day) and the corresponding probabilities. But from the provided information, it seems like we don't have these values.
If the values were provided, the general approach would be as follows:
1. Write down the probability distribution. This could be presented as a table or a mathematical function, with X values (representing the number of bananas sold), paired with their associated probabilities.
2. Calculate the sum of the given probabilities.
3. In a valid probability distribution, the total probability should equal 1. If the sum of given probabilities does not equal 1, the difference between 1 and the sum of the provided probabilities would be the value of K.
However, in this case, we don't have the necessary values to follow these steps. There isn't enough information about the distribution of X values and their associated probabilities to calculate K. Therefore, the solution to the problem is that it can't be solved with the data provided. We need additional information about the distribution.