Generally Electric has developed a new bulb whose design specifications call for a light output of 960 lumens compared to an earlier model that produced only 750 lumens. The company's data indicate that the standard deviation of light output for this type of bulb is 18.4 lumens. From a sample of 20 new bulbs, the testing committee found an average light output of 954 lumens per bulb. At a 0.05 significance level, can Generally Electric conclude that its new bulb is producing the specified 960 lumen output?