As a result of complaints from customers about delivery times, the manager at a pizza delivery service is ready to undertake a study to determine the average delivery time. Until​ now, the manager has believed the delivery time was 20 minutes.       Question content area bottom Part 1 What are the null and alternative​ hypotheses?

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A: https://drive.google.com/file/d/1DCIXzOc8OriCrM3VcuA8-1wtxEBZXlw6/view?usp=sharing