Mathematics, 07.05.2021 21:50 gabbys2002
A 1948 study in Biometrika investigated the effects of several different diets on the weight of chickens. In this study, chickens were randomly assigned to one of several different groups, and each group of chickens received a different type of feed. The data provided represent a subset of data from this study and show the weights (in grams) of chickens receiving the sunflower, meatmeal, soybean, and casein feeds.
Use software to conduct an analysis of variance (ANOVA) Fâtest to test the claim that the mean weights of chickens receiving sunflower, meatmeal, soybean, and casein are equal. What are the Fâstatistic and ppâvalue for this test? Please round your Fâstatistic to the nearest two decimal places and your ppâvalue to the nearest five decimal places.
1. Fâstatistic :
2. ppâvalue :
Based on the ppâvalue for this ANOVA Fâtest, select the correct conclusion at the =0.05α=0.05 level.
a. Since the ppâvalue is greater than =0.05α=0.05, there is little evidence of a difference in the mean weights of chickens receiving the sunflower, meatmeal, soybean, and casein feeds.
b. Since the ppâvalue is less than =0.05α=0.05, there is significant evidence of a difference in the mean weights of chickens receiving the sunflower, meatmeal, soybean, and casein feeds.
c. Since the ppâvalue is less than =0.05α=0.05, there is little evidence of a difference in the mean weights of chickens receiving the sunflower, meatmeal, soybean, and casein feeds.
d. Since the ppâvalue is greater than =0.05α=0.05, there is significant evidence of a difference in the mean weights of chickens receiving the sunflower, meatmeal, soybean, and casein feeds.
weight feed
368 1
390 1
379 1
260 1
404 1
318 1
352 1
359 1
216 1
222 1
283 1
332 1
325 2
257 2
303 2
315 2
380 2
153 2
263 2
242 2
206 2
344 2
258 2
243 3
230 3
248 3
327 3
329 3
250 3
193 3
271 3
316 3
267 3
199 3
171 3
158 3
248 3
423 4
340 4
392 4
339 4
341 4
226 4
320 4
295 4
334 4
322 4
297 4
318 4
Answers: 3
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A 1948 study in Biometrika investigated the effects of several different diets on the weight of chic...
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