1. (4 pts) 1.16 Number of pets owned and happiness [CL1] : The scatterplot below shows the relationship between happiness and number of pets owned for 57 people, based on a survey. [CL1] Tips for problems 1-2: Recall that observational studies permit us to identify relationships, but experiments must be conducted before we can make causal statements. Recall from algebra that the slope of a linear equation indicates a rising (positive slope) or falling (negative slope) line, in this way you classify plots of the data points by observing if the trend is generally linear and rising or falling. Can we conclude that having pets causes an increase in happiness? __Yes, this is an experimental study __Yes, this is an observational study __No, this is an observational study __No, this is an experimental study Can we conclude that having pets is correlated to happiness? __Yes, this is an experimental study __Yes, this is an observational study __No, this is an observational study __No, this is an experimental study.