To study what happens to stored oranges, an experiment is performed in a warehouse filled with crates of stored oranges. After predetermined numbers of days in storage, a crate is chosen at random and the number of moldy oranges is recorded:
a. Calculate the least squares regression line to predict the number of moldy oranges.
b. Estimate the number of moldy oranges in a crate after 30 days of storage.
c. Estimate the number of moldy oranges in a crate after 100 days of storage. What can be said about this estimate?
d. What proportion of the total variability in the number of moldy oranges can be explained by the variation in the storage time?
e. Calculate the Pearson product moment correlation coefficient.
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