The lumen output was determined for each of i = 3 different brands of 60-watt soft-white lightbulbs, with j = 8 bulbs of each brand tested. the sums of squares were computed as sst r = 591.2 and sse = 4773.3. state the hypotheses of interest, and use the f test of anova (at α = 0.05) to decide whether there are any differences in true average lumen outputs among the three brands for this type of bulb.

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

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answer: 7

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