run is performed using the new formulation. The newly formulated popcorn is cooked in 50 randomly selected microwave ovens measured (in seconds). Oppenlicht staff reports the results to company executives via the following histogram. Frequency 15 15 - 15 10 10 U 5- 110 120 130 140 150 160 Cooking time (in seconds) Based on this histogram, estimate the standard deviation of the sample of 50 cooking times. Carry your intermediate computations to at least four decimal places, and round your answer to at least one decimal place. Explanation Check