13.| Veterinary Science: Shetland Ponies How much should a healthy Shetland pony weigh? Let x be the age of the pony (in months) and let y be the average weight of the pony (in kilograms). The following information is based on data taken from The Merck Veterinary Manual (a reference used in most veterinary colleges): х 3 12 18 24 60 95 140 170 185 (a) Make a scatter diagram and draw the line you think best fits the data. (b) Would you say the correlation is low, moderate, or strong? positive or negative? (c) Use a calculator to verify that Ex = 63, Ex² = 1089, £y = 650, Ey = 95,350, and Exy = 9930. Compute r. As x increases from 3 to 24 months, does the value of r imply that y should tend to increase or decrease? Explain.

Complete each step. a'a6 a4 - 4 a' II

A police academy has just brought in a batch of new recruits.  All recruits are given an aptitude test and a fitness test. Suppose a researcher wants to know if there is a significant difference in aptitude scores based on a recruits’ fitness level. Recruits are ranked on a scale of 1 – 3 for fitness (1 = lowest fitness category, 3 = highest fitness category). Using “ApScore” as your dependent variable and “FitGroup” as your independent variable, conduct a One-Way, Between Subjects, ANOVA, at α = 0.05, to see if there is a significant difference on the aptitude test between fitness groups.    Identify the correct written form of the null hypothesis   A. The mean fitness score between the three aptitude tests are NOT equal B. The mean aptitude score between the three fitness groups are NOT equal C. The mean aptitude score between the three fitness groups are equal D. The mean fitness score between the three aptitude tests are equal

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