Smartphones: A poll agency reports that 32% of teenagers aged 12-17 own smartphones. A random sample of 100 teenagers is drawn. Round your answers to at least four decimal places as needed. Part 1 of 6 (a) Find the mean us. The mean un is |0.32 Part 2 of 6 (b) Find the standard deviation on. The standard deviation on is 0.0466 Part 3 of 6 (c) Find the probability that more than 34% of the sampled teenagers own a smartphone. The probability that more than 34% of the sampled teenagers own a smartphone is |0.4963 Part 4 of 6 (d) Find the probability that the proportion of the sampled teenagers who own a smartphone is between 0.29 and 0.35. The probability that the proportion of the sampled teenagers who own a smartphone is between 0.29 and 0.35 is 0.0111 . Part 5 of 6 (e) Find the probability that less than 35% of sampled teenagers own smartphones. The probability that less than 35% of sampled teenagers own smartphones is |0.5055 Part: 5 / 6 Part 6 of 6 (f) Would it be unusual if less than 22% of the sampled teenagers owned smartphones? It (Choose one) v be unusual if less than 22% of the sampled teenagers owned smartphones, since the probability is]