24-7 video games takes a random survey of 500 site users and determines that the mean age of the sample is 18. which conclusion is valid based on the random survey? a) most users on all video game sites are exactly 18 years of age. b) most users on the 24-7 video games site are about 18 years of age. c) most users on the 24-7 video games site are 18 years of age or older. eliminate d) all users on the 24-7 video games site are 18 years of age or younger.