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Q1) The effect of eye - spot patterns on behaviour of moth - eating birds. Birds were tested in box with two chambers and were free to move from one chamber to another. In one chamber two large eye - spots were painted on one wall. Other chamber had plain wall. Researcher recorded amount of time each bird spent in plain chamber in a 60-minute session. Assume study produced mean of M = 37 minutes on plain chamber with SS = 288 for sample of n = 9 birds. (Note: If the eye spots have no effect, then birds must spend average of m = 30 minutes in each chamber.)
a) Is this sample enough to conclude that eye-spots have significant influence on birds' behaviour? Use two-tailed test with a = 0.05.
b) Calculate estimated Cohen's d to measure size of treatment effect.
The mean amount purchased by a typical customer at Churchill\'s Grocery Store is $23.50 with a standard deviation of $5.00. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the foll..
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In the Distance problems, the kids are given a Rate (speed) that a vehicle is going, as well as a Time that the vehicle travels, and asked to calculate the Distance travelled. In the Rate problems they are asked to compute Rate from the other two ..
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