Over the past 30 years in the United States, there has been a strong negative co

Question

Over the past 30 years in the United States, there has been a strong negative correlation between the number of infant deaths at birth and the number of people over age 65. (a) Is the fact that people are living longer causing a decrease in infant mortalities at birth? Explain your answer. Yes, A strong correlation implies causation. No, A strong correlation implies causation. No, A strong correlation does not imply causation. Yes, A strong correlation does not imply causation. (b) What lurking variables might be causing the increase in one or both of the variables? Explain your answer.

Explanation / Answer

4. Given least square line:

v = 5 - 1x

Coefficient of x = -1

And therefore,

Value of slope = -1

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