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A safety light is designed so that the times between ashes are normally distributed with a mean of 4.00 s and a standard deviation of 0.7m s. in. Find the probability that an individual time is greater than 5.00 s. b. Find the probability that the mean for 50 randomly selected times is greater than 5.00 s. c. Given that the light is intended to help people see an obstrudion, which result is more relevant for assessing the safety of the light? Click here to View [E98 1 of the standard normal distribution. Click here to View page 2 of the standard normal distribution. a. The probability is approximately D. [Round to four decimal places as needed.) b. The probability is approximately D. (Round to four decimal places as needed.) c. Choose the correct answer below. Q) A. Part (a) is more signicant because the times of a single strobe is important. 0 B. Part (b) is more signicant because the times of a single strobe is important. 0 C. Part (a) is more signicant because the average time for a sample is important. 0 D. Part (b) is more signicant because the average time for a sample is important