17. In a computerized telephone survey done by Johnny, 44% of residents are generally at home to receive a call. If 12 calls are made in an hour, what is the probability that 5 residents are at home to receive the call? a) 12 's (0.44)' (0.56)' b) (0.44) (0.56)' c) 12 5(0.44)' d) 1, C's (0.44) (0.56)5 18. Blossom has a set of data has a mean of 12 and a standard deviation of 3, what is the z-score for a value of 15? a) - 1 b) 1 c) +1 d) 0 19. Tahira asks, which of the following does not give the same value when evaluated? a) sP4 b) 5! c) 120 d) 5 x 4 x 3x 1 20. If mean - 10, standard deviation - 2. and X = 12 what is the population of scoring lower than this? a) 0.3413 b) 0.1587 c) 0.68 d) 0.8413 21. Cirjohn is doing a project for his class. His teacher asks him to collect data, one by his own research. Which type of data is this? a) ordinal b) nominal c) primary d) secondary