Researchers fed cockroaches a sugar solution. Ten hours later, they dissected the cockroaches and measured the amount of sugar in various tissues. Here are the amounts (in micrograms) of d-glucose in the hindguts of 5 cockroaches: 55.95 68.24 52.73 21.50 23.78 The insects are a random sample from a cockroach population grown in the laboratory. The best point estimate for the mean amount of d-glucose in cockroach hindguts under these conditions is. Round your answer to the nearest hundredth.