SAT scores: Assume that in a given year the mean mathematics SAT score was 524, and the standard deviation was 118. A sample of 66 scores is chosen. Use ExceL (c) Find the 60 percentile of the sample mean. Round the answer to at least two decimal places. The 60 percentile of the sample mean is XSmartphones: A poll agency reports that 40% of teenagers aged 12-17 own smartphones. A random sample of125 teenagers is drawn. Round your answers to at least four decimal places as needed. (c) Find the probability that more than 45% of the sampled teenagers own a smartphone. The probability that more than 45% of the sampled teenagers own a smartphone is