Standard interpretation of Quantum Mechanics is able to reveal the hidden variables. In fact, these variables are traceable in Gaussian normal distribution function (bell curve) and no more hidden.
In case of standard normal distribution, that is to say when the mean value is zero and σ=1, these variables will transform to −3,−2, −1, 0, +1, +2, +3 as long as uncertainty or tolerance of measurement is within the range ±3 and equal to 6 which is called natural tolerance (σ= standard deviation).
The mentioned variables will lead us towards a real wavefunction as a mathematical tool for calculating the probabilities. Because, in a real wavefunction there isn't any need to use complex or imaginary numbers.
Deep understanding of Gaussian normal distribution function and cumulative distribution function will show us in Quantum Mechanics how are the probabilities converted to well-defined outcome and the so called measurement problem is in fact not problem at all.
For more information, please refer to the following articles published in ToeQuest Research Library:
1- How Can the Photons Tolerate Each Other?
2- Double Slit Experiment and Quantum Mechanics