Answer:
To find the z-score such that the area under the standard normal curve to the left is 0.25, we can use a standard normal distribution table or a statistical calculator. The z-score represents the number of standard deviations away from the mean.
From the standard normal distribution table or calculator, we find that the z-score corresponding to an area of 0.25 to the left is approximately -0.67.
Therefore, the z-score such that the area under the standard normal curve to the left is 0.25 is approximately -0.67 (rounded to two decimal places).