I need assistance with this assignment. I need to draw one conclusion from these results.

In the past six weeks, I bought two different light bulbs. I recorded the number of hours that each bulb lasted. The three bulbs from BrightSmart lasted 20 hours, 50 hours, & 80 hours. Compute the mean, range, and standard deviation for these BrightSmart light bulbs. The three bulbs I purchased from Glow-a-Way lasted 100 hours, 40 hours, & 10 hours. Compute these Glow-a-Way light bulbs' mean, range, and standard deviation.