Mathematics, 19.02.2020 04:38 kprincess16r
A telecommunications company commissioned a study to investigate the amount of time that people spend on phone calls. The study that found that the length of time that people spend on a phone call is approximately normally distributed with a mean of 484 seconds and a standard deviation of 93.7 seconds. Calculate the standardized value (z) for a time of 620 seconds. Give your answer to 2 decimal places.
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A telecommunications company commissioned a study to investigate the amount of time that people spen...
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