15.2.20 One dimensional random variables and their characteristics

Problem: During the observed period the changes in the exchange rate of EUR in relation to the USD can be considered a random variable, with equal probability taking values from the interval \( [28.3 ; 30] \). The amount of tuition fees at the institute is calculated by the following rate, linked by the exchange rate of the following function \( \tau=\xi-1,7 \). Find the distribution density and function of the random variable \( \tau \). Calculate its expected value and dispersion.