A survey of adults in several countries was conducted to determine the percentage of adults who use social networking sites. Consider the following countries in this study: Germany, France, Belgium, and Ireland. Using a 0.05 level of significance, conduct a hypothesis test to determine whether the proportion of adults using social networking sites is equal for all four countries.

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent.the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244