When can correlation evidence help answer a casual question?

Answer the questions below. (a) A phone company determined that an increase in income does not indicate a change in a customer's phone usage. What does the analysis show? OThere is no correlation between income and phone usage. There is a correlation between income and phone usage. There may or may not be causation. Further studies would have to be done to determine this. OThere is a correlation between income and phone usage. There is probably also causation. This is because there is likely an increase in phone usage with an increase in income. (b) A music store conducted a survey. It showed that the number of CDs purchased by a shopper decreases with the number of songs he downloaded. What can we likely say? There is no correlation between number of CDs purchased and number of songs downloaded. There is a correlation between number of CDs purchased and number of songs downloaded. However, there is no causation. This is because there is a decrease in the number of CDs purchased with…

A reşearcher hears a study report that 30 percent of Americans are obese, and he wants to test that claim with a sample of 200 participants. Which procedure should he use? O Two-way chi square O Correlation O Mode O One-way chi square MacBook Air 80 DD F3 F4 F5 F6 F7 F8 F9 F10 %23 24 & * 4 7 E T Y U D F G H J K C N M d command * 00 B * 3

Provide answer.