Do lizards play a role in spreading plant seeds? Some research carried out in a country would suggest so. The researchers collected 400 seeds of this particular type of fig. 100 of which were from each treatmenti lizard dung. bird dung, rock hyrax dung. and uneaten figs. They planted these seeds in batches of 5. and for each group of 5 they recorded how many of the seeds germinated. This resulted in 20 observations for each treatment. The treatment means and standard deviations are given in the accompanying table. Treatmentn Es Uneaten figs 20 2.80 0.30 Lizard dung 20 2.75 0.36 20 2.10 0.35 Hyrax dung 20 1.45 0.29 Bird dung A USE SALT (a) Construct the appropriate ANOVA table. and test the hypothesis that there is no difference between the means for the number of seeds germinating for the four treatments. (Use a- 0.05. Round your mean squares to three decimal places and Fstatistic to two decimal places.) Source of Variation Sum of Squares Mean Square IP Treatments 3 1345 4483333 42 00 Error 70 8.0078 O 10055 70 21.5478 Total Use technology to find the P-value. (Round your answer to four decimal places.) Prvalue- 0 What can you cenclude? O Reject Hg. The data do not provide convincing evidence to support the claim that the mean number of seeds germinating is not the same for all four treatments O Fail to reject Ha The data provide convincing evidence to support the claim that the mean number of seeds germinating is not the same for all four treatments. O Fail to reject H. The data do not provide convincing evidence to support the claim that the mean number of seeds germinating is not the same for all four treatments. Reject H. The data provide convincing evidence to support the claim that the mean number of seeds germinating is not the same for all four treatments. (b) Is there evidence that seeds eaten and then excreted by lizards germinate at a higher rate, on average. than these eaten and then excreted by birds? Give statistical evidence to support your anser. Report the 95 T-K interval for ard-Hird. (Round your ansvers to three decimal places.) (0339 Ox D802 x ) Does the interval provide evidence that seeds eaten and then excreted by lizards germinate at a higher rate, on average, than those eaten and then excreted by birds? O Since both endpoints of the interval are negative, we have convincing evidence that seeds eaten and then exereted by lizards germinate at a higher rate from these eaten and then excreted by birds. O Since both endpoints of the interval are positive, we de nat have convincing evidence that seeds eaten and then excreted by lizards germinate at a higher rate from theose eaten and then excreted by birds. Since both endpoints of the interval are positive, we have convincing evidence that seeds eaten and then excreted by lizards germinate at a higher rate from those eaten and then excreted by birds. lO Since the interval contains zero, we do not have convincing evidence that seeds eaten and then excreted by lizards germinate at a higher rate from those eaten and then excreted by birds. O xcreted by birds. Since the interval contains zero, we have convincing evidence that seeds eaten and then excreted by izards germinate at a higher rate from those eaten and then ex

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Do lizards play a role in spreading plant seeds? Some research carried out in a country would suggest so. The researchers collected 400 seeds of this particular type of fig, 100 of which were from each treatment: lizard dung, bird dung, rock hyrax dung, and uneaten figs. They planted these seeds in batches of 5, and for each group of 5 they
recorded how many of the seeds germinated. This resulted in 20 observations for each treatment. The treatment means and standard deviations are given in the accompanying table.
Treatment
n
Uneaten figs
20 | 2.80
0.30
Lizard dung
20 2.75
0.36
Bird dung
20 2.10
0.35
Hyrax dung
20 1.85
0.29
n USE SALT
(a) Construct the appropriate ANOVA table, and test the hypothesis that there is no difference between the means for the number of seeds germinating for the four treatments. (Use a = 0.05. Round your mean squares to three decimal places and F statistic to two decimal places.)
Source of
Variation
Sum of
Squares
Mean
df
F
Square
Treatments
3
13.45
4.483333
42.08
Error
76
8.0978
0.10655
Total
79
21.5478
Use technology to find the P-value. (Round your answer to four decimal places.)
P-value = 0
What can you conclude?
O Reject Hn: The data do not provide convincing evidence to support the claim that the mean number of seeds germinating is not the same for all four treatments.
O Fail to reject Ho. The data provide convincing evidence to support the claim that the mean number of seeds germinating is not the same for all four treatments.
O Fail to reject Ho. The data do not provide convincing evidence to support the claim that the mean number of seeds germinating is not the same for all four treatments.
O Reject H. The data provide convincing evidence to support the claim that the mean number of seeds germinating is not the same for all four treatments.
(b) Is there evidence that seeds eaten and then excreted by lizards germinate at a higher rate, on average, than those eaten and then excreted by birds? Give statistical evidence to support your answer.
Report the 95% T-K interval for Hizard - Hbird. (Round your answers to three decimal places.)
x 0.862
]× )
0.338
Does the interval provide evidence that seeds eaten and then excreted by lizards germinate at a higher rate, on average, than those eaten and then excreted by birds?
O Since both endpoints of the interval are negative, we have convincing evidence that seeds eaten and then excreted by lizards germinate at a higher rate from those eaten and then excreted by birds.
O Since both endpoints of the interval are positive, we do not have convincing evidence that seeds eaten and then excreted by lizards germinate at a higher rate from those eaten and then excreted by
birds.
O Since both endpoints of the interval are positive, we have convincing evidence that seeds eaten and then excreted by lizards germinate at a higher rate from those eaten and then excreted by birds.
O Since the interval contains zero, we do not have convincing evidence that seeds eaten and then excreted by lizards germinate at a higher rate from those eaten and then excreted by birds.
O Since the interval contains zero, we have convincing evidence that seeds eaten and then excreted by lizards germinate at a higher rate from those eaten and then excreted by birds.
Transcribed Image Text:Do lizards play a role in spreading plant seeds? Some research carried out in a country would suggest so. The researchers collected 400 seeds of this particular type of fig, 100 of which were from each treatment: lizard dung, bird dung, rock hyrax dung, and uneaten figs. They planted these seeds in batches of 5, and for each group of 5 they recorded how many of the seeds germinated. This resulted in 20 observations for each treatment. The treatment means and standard deviations are given in the accompanying table. Treatment n Uneaten figs 20 | 2.80 0.30 Lizard dung 20 2.75 0.36 Bird dung 20 2.10 0.35 Hyrax dung 20 1.85 0.29 n USE SALT (a) Construct the appropriate ANOVA table, and test the hypothesis that there is no difference between the means for the number of seeds germinating for the four treatments. (Use a = 0.05. Round your mean squares to three decimal places and F statistic to two decimal places.) Source of Variation Sum of Squares Mean df F Square Treatments 3 13.45 4.483333 42.08 Error 76 8.0978 0.10655 Total 79 21.5478 Use technology to find the P-value. (Round your answer to four decimal places.) P-value = 0 What can you conclude? O Reject Hn: The data do not provide convincing evidence to support the claim that the mean number of seeds germinating is not the same for all four treatments. O Fail to reject Ho. The data provide convincing evidence to support the claim that the mean number of seeds germinating is not the same for all four treatments. O Fail to reject Ho. The data do not provide convincing evidence to support the claim that the mean number of seeds germinating is not the same for all four treatments. O Reject H. The data provide convincing evidence to support the claim that the mean number of seeds germinating is not the same for all four treatments. (b) Is there evidence that seeds eaten and then excreted by lizards germinate at a higher rate, on average, than those eaten and then excreted by birds? Give statistical evidence to support your answer. Report the 95% T-K interval for Hizard - Hbird. (Round your answers to three decimal places.) x 0.862 ]× ) 0.338 Does the interval provide evidence that seeds eaten and then excreted by lizards germinate at a higher rate, on average, than those eaten and then excreted by birds? O Since both endpoints of the interval are negative, we have convincing evidence that seeds eaten and then excreted by lizards germinate at a higher rate from those eaten and then excreted by birds. O Since both endpoints of the interval are positive, we do not have convincing evidence that seeds eaten and then excreted by lizards germinate at a higher rate from those eaten and then excreted by birds. O Since both endpoints of the interval are positive, we have convincing evidence that seeds eaten and then excreted by lizards germinate at a higher rate from those eaten and then excreted by birds. O Since the interval contains zero, we do not have convincing evidence that seeds eaten and then excreted by lizards germinate at a higher rate from those eaten and then excreted by birds. O Since the interval contains zero, we have convincing evidence that seeds eaten and then excreted by lizards germinate at a higher rate from those eaten and then excreted by birds.
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