Final answer:
The effectiveness of the cancellation notice depends on the insurance company's policy and state regulations.
Step-by-step explanation:
The effectiveness of the notice of cancellation depends on the insurance company's policy and the state regulations. In general, insurance companies are required to provide sufficient notice to policyholders before canceling a policy for nonpayment of premium. However, the specific length of notice and other requirements vary by state. It's important for Mike and Judy to review their insurance policy and consult with their state's insurance department to determine if the notice they received is effective.