An economist compiled data on productivity improvements last year for a sample of firms producing electronic computing equipment. the firms were classified according to the level of their average expenditures for research and development in the past three years (low, moderate, high). a. is this study experimental, observational, or mixed experimental and observational? why? b. identify all factors, factor levels, and factor-level combinations. c. what type of study design is being implemented here? d. what is the basic unit of study?

8

step-by-step explanation:

to find the amount of gift bags to use all the supplies, find the gcf or greatest common factor. this is the largest number which multiplies evenly into each term.

48 has factors: 1, 2, 3, 4, 6, 8, 12. 16, 24, 48

80 has factors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

64 has factors: 1, 2, 4, 8, 8, 16, 32, 64

the highest number factor they all share in common is 8. this means there will be 8 bags with 6 pencils, 10 markers, and 8 stickers in each bag.

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

step-by-step explanation: