In a 40-day period, at least one bear was observed by camper in designated camp site on 28 separate days. According to this information, what is the daily frequency of sightings (in which observed)?

Here's how to calculate the daily frequency of bear sightings:

* Days with sightings: 28

* Total days: 40

Daily frequency = (Days with sightings) / (Total days)

Daily frequency = 28 / 40 = 0.7

Therefore, the daily frequency of bear sightings is 0.7 or 70%.