P(Z<z)=0.1003

To find the value of z for which the cumulative probability is 0.1003, we can use a standard normal distribution table or a statistical calculator. Using a standard normal distribution table, we can look up the value closest to 0.1003. The closest value is 0.1003, which corresponds to z ≈ -1.28. Therefore, P(Z < -1.28) is approximately equal to 0.1003.