2. A statistical analysis of 1,000 long-distance telephone calls made from the headquarters of the Bricks and Clicks Com

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2 A Statistical Analysis Of 1 000 Long Distance Telephone Calls Made From The Headquarters Of The Bricks And Clicks Com 1 (47.9 KiB) Viewed 99 times

2. A statistical analysis of 1,000 long-distance telephone calls made from the headquarters of the Bricks and Clicks Computer Corporation indicates that the length of these calls is normally distributed, with m = 240 seconds and s = 40 seconds. a. What is the probability that a call lasted less than 180 seconds? b. What is the probability that a call lasted between 180 and 300 seconds? c. What is the probability that a call lasted between 110 and 180 seconds?