Chicken farming is a multi-billion dollar industry, and any methods that increase the growth rate of young chicks can increase company profits. An experiment was conducted to measure and compare the effectiveness of various feed supplements on the growth rate of chickens. Newly hatched chicks were randomly allocated into three groups, and each group was given a different feed supplement. Below are summary statistics on the weights (in grams) of the chickens in each group after 12 weeks on the feed supplement. supplement mean sd n horsebean 160.20 38.63 10 linseed 218.75 52.24 12 meatmeal 276.91 64.90 11 Suppose you are interested in whether these data provide strong evidence that the average weights of chickens that were fed linseed and horsebean are different. What is the standard error of the point estimate for the difference? Group of answer choices 19.4 3.2 2.8 24.7
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Chicken farming is a multi-billion dollar industry, and any methods that increase the growth rate of young chicks can increase company profits. An experiment was conducted to measure and compare the effectiveness of various feed supplements on the growth rate of chickens. Newly hatched chicks were randomly allocated into three groups, and each group was given a different feed supplement. Below are summary statistics on the weights (in grams) of the chickens in each group after 12 weeks on the feed supplement.
| supplement | mean | sd | n |
|---|---|---|---|
| horsebean | 160.20 | 38.63 | 10 |
| linseed | 218.75 | 52.24 | 12 |
| meatmeal | 276.91 | 64.90 | 11 |
Suppose you are interested in whether these data provide strong evidence that the average weights of chickens that were fed linseed and horsebean are different. What is the standard error of the point estimate for the difference?
Group of answer choices
19.4
3.2
2.8
24.7
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