hw2 - Stat 503 Homework #2 (80pts) Due on Thursday 9/10 1....

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Stat 503 Homework #2 (80pts) Due on Thursday 9/10 1. (10pts) The mean and SD of a set of 47 body temperature measurements were as follows: y = 36.497 °C s = 0.172 °C If the measurements were converted to °F, and the conversion from Celsius to Fahrenheit is y’ = 1.8 y + 32. (a) (5pts) What would be the new mean and SD? (b) (5pts) What would be the new coefficient of variation? 2. (10pts) A researcher measured the average daily gains (in kg/day) of 20 beef cattle; typical values were 1.39, 1.57,1.44,… The mean of the data was 1.461 and the standard deviation was .178. (a) (5 pts) Express the mean and std in lb/day. ( Hint: 1 kg=2.2 lb) (b) (5 pts) What is the mean and std after we standardize the data? 3. (5pts) In a certain population of the freshwater sculpin, Cottus rotheus, the distribution of the number of tail vertebra is as shown in the table. No. of Vertebrae Percent of Fish 20 3 21 51 22 40 23 6 Total 100 Find the probability that the number of tail vertebrae in a fish randomly chosen from the
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hw2 - Stat 503 Homework #2 (80pts) Due on Thursday 9/10 1....

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