2. A company is trying to decide which of the two types of tires to buy for their trucks. They would like to adopt brand C unless there is some evidence that brand D is better. An experiment was conducted where 16 tires from each brand were used. The tires were run under similar conditions until they wore out. The results are: Brand C: X, = 40,000 kms S1 = = 5,400 kms %3D Brand D: X2 = 38,000 kms S2 = 3,200 kms What conclusion can be drawn? 3. Two types of rice varieties are being considered for yield and a comparison is needed. Thirty hectares were planted with the rice varieties exposed to fairly uniform growing conditions. The results are tabulated below: Variety A Variety B Average yield 80 sacks/hectare 35 sacks/hectare 12.1 Sample variance At .05 significance level, can we conclude that variety A is the better type? 5.9

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A: Step 1:

Average

In mathematics, everyone must have heard the term average in one place or other. Almost all types of calculation require taking out an average. In everyday life, the term is used for denoting a certain amount that can be said to be a typical quantity for multiple people or objects. In other words, if a group of people possesses a certain object, then the average gives us an idea regarding the quantity of the object possessed by each person. However, this is solely based on mathematical calculation. It is important to note that most people will not strictly have the average value in a group.