Final answer:
The required height of the uniform density curve cannot be determined with the given information.
Step-by-step explanation:
The required height of the uniform density curve, represented by the horizontal line at y = a, can be determined by finding the value of a that corresponds to the given scenario. In this case, we need to find the value of a for which the area under the normal density curve to the right of a is 0.035. The given information does not provide the specific value of a, so we cannot determine the required height.