In a study to investigate the relationship between age and favorite flavor of ice cream, an equal number of people were randomly selected for each age group. Is the study observational or experimental? If it is an experiment, what is the controlled factor?

Aadc is formed by reflecting aabc across line segment ac, as shown in the figure. if the length of ac is 4 units, the area of aadc is square units.

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain

What is the sum of 25x + 15y and (-18x - 6y)