Suppose a researcher reports a correlation coefficient of 0.87 between coffee drinking and lung cancer in a SRS of participants in an observational study.The researcher intends to publish this novel research.

A)Interpret the correlation coefficient as to its strength and association.

B)Are there any "lurking variables" that could be confounding the relationship between coffee drinking and lung cancer?

1.)A) There is a strong positive relationship between coffee drinking and lung cancer as presented in the study population.

B) Cigarette smoking

2.) A) There is a moderate positive relationship between coffee drinking and lung cancer as presented in the study population.

B) Year the participant was born

3.) A) There is a strong neagtive relationship between coffee drinking and lung cancer as presented in the study population.

B) Participants sex