The scatter diagram of the lengths and widths of the petals of a type of flower is football shaped; the correlation is 0.8. The average petal length is 3.1 cm and the SD is 0.25 cm. The average petal width is 1.8 cm and the SD is 0.2 cm.
One of the petals is 0.2 cm wider than another. Regression says that the wider petal is estimated to be ____________ cm longer than the other.

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Find the regression estimate of the length of a petal that is 1.5 cm wide.

Of the petals that are 1.5 cm wide, about what percent are less than 2.75 cm long?

Find the regression estimate of the length of a petal that is 1.5 cm wide.
ans 2.8

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