13.70 A national public television network has found that 35% of its contributions are for less than $20, with 45% for $20–$50, and 20% for more than $50. In a random sample of 200 of the contributions to a local station, 42% were for less than $20, 43% were for

$20–$50, and 15% were over $50. At the 0.05 level, does the local station’s distribution of contributions differ significantly from that experienced nationally?