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Do lizards play a role in spreading plant seeds? Some research carried out in South Africa would suggest so ("Dispersal of Namaqua Fig [Ficus cordata cordata] Seeds by the Augrabies Flat Lizard [Platysaurus broadleyi]," Journal of Herpetology [1999]: 328-330). 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.
a. Construct the appropriate ANOVA table, and test the hypothesis that there is no difference between mean number of seeds germinating for the four treatments.
b. Is there evidence that seeds eaten and then excreted by lizards germinate at a higher rate than those eaten and then excreted by birds? Give statistical evidence to support your answer.
snowfalls occur randomly and independently over the course of winter. the average is one snowfall every 3 days.a what
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What is the probability 2 of more randomly selected senators have the same birthday (100 senators).
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Is there a general pattern? Do you think that the comparison of Alabama and Alaska that we noticed could be part of a general pattern
question a study is conducted in patients with hiv. the primary outcome is cd4 cell count which is a measure of the
Marie claims she can predict the sex of pregnant women's babies for first-time new mothers. She sees 1000 women a year, and she always predicts a female. She charges $1000 for a prediction
Find the median and the first and third quartiles for the number of CDs owned by young adults. Develop a box plot for the information. Compare the number of CDs owned by the two groups.
If the probability of getting caught copying someone else's exam is .1, find the probability of not getting caught in three attempts. Assume independence.
A sample of 81 observations is taken from a normal population. The sample mean is 40, and the sample standard deviation is 5. Determine the 95 percent confidence interval for the population mean.
what additional information is obtained from measurements on an interval scale compared to measurements on an ordinal
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