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45 minutes and standard deviation 5 minutes (you may need to use a table. First, we must calculate this student's score in terms of standard deviations from the average This is calculated as follows So we're given for a certain college course that the mean time to complete the final examination is 80 minutes, and it has a standard deviation of 10 minutes So let's just drop that down. Duration average is 45 minutes with standard deviation of 10 minutes What is the probability of a duration less than 35 minutes Your solution’s ready to go Enhanced with ai, our expert. Suppose that the time to complete a test is normally distributed with mean 45 minutes and standard deviation 15 minutes Normal curve with mean 45 minutes and. Here’s the best way to solve it I) a survey indicates that for each trip to the supermarket, a shopper spends an. What values are 2 standard deviations away from the mean (b) without assuming anything about the distribution of times, at least what percentage of the times are between 25 and 45 minutes? The time it takes to complete a test is normally distributed with a mean of 45 minutes and a standard deviation of 12 minutes If nick took an hour and 8 minutes to complete the test, find.