16. we should do a scatterplot of the data when we compute a correlation coefficient because the scatterplot will all us to a. determine the exact value of the correlation coefficient b. see the relationship between two variables c. determine whether a relationship is likely to exist in the population from which the sample is drawn d. predict accurate y scores for known x scores

Mexico city, mexico, is the world's second largest metropolis and is also one of its fastest-growing cities with a projected growth rate of 3.2% per year. its population in 1991 was 20,899,000 people. use the formula p = 20.899e0.032t to predict its population p in millions with t equal to the number of years after 1991. what is the predicted population to the nearest thousand of mexico city for the year 2010?