Assume that the 1+z) and |-z) states for an electron in a magnetic field are energy eigen- vectors with energies E and 0, respectively, and assume that the electron's state at t = 0 is -M |y(0)) = |45|-In Find the probability that we will determine this electron's spin to be in the +x direction at time t

Assume that the 1+z) and |-z) states for an electron in a magnetic field are energy eigen- vectors with energies E and 0, respectively, and assume that the electron's state at t = 0 is -M |y(0)) = |45|-In Find the probability that we will determine this electron's spin to be in the +x direction at time t