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# What does it mean if X=0 is in the observed range?

For the following regression equation: Estimated number of words in conversation with unfamiliar partner = 21.13 + 0.62(number of words in conversation with familiar partner)

x = 0 is in the observed range. This means that:

a. The mean number of words in a conversation with an unfamiliar partner is estimated to be 0 when the number of words in conversation with a familiar partner is 0

b. The y-intercept is 0

c.The mean number of words in a conversation with an unfamiliar partner is estimated to be 21.13 when the number of words in conversation with a familiar partner is 0

d.The mean number of words in a conversation with an unfamiliar partner is estimated to be 0.62 when the number of words in conversation with a familiar partner is 0

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