Assign test_stat_72 to the value of the test statistic for the years 1971 to 1973 using the states in death_penalty_murder_rates. As before, the test statistic is, "the number of increases minus the number of decreases.

Select the correct answer. a company wants to use online methods to target more customers. it decides to conduct a market research by collecting the data of a few customers with their consent. they want to track data of the sites that their customers frequently visit. which software can the company? a. spyware b. bots c. adware d. trojan horse e. rootkits