A statistical analysis of 1,000 long-distance telephone calls made by a company indicates that the length of these calls is normally distributed, with a mean of 260 seconds and a standard deviation of...

Extracted text: A statistical analysis of 1,000 long-distance telephone calls made by a company indicates that the length of these calls is normally distributed, with a mean of 260 seconds and a standard deviation of 50 seconds. Complete parts (a) through (d). a. What is the probability that a call lasted less than 180 seconds? The probability that a call lasted less than 180 seconds is (Round to four decimal places as needed.) b. What is the probability that a call lasted between 180 and 340 seconds? The probability that a call lasted between 180 and 340 seconds is (Round to four decimal places as needed.) c. What is the probability that a call lasted more than 340 seconds? The probability that a call lasted more than 340 seconds| (Round to four decimal places as needed.) d. What is the length of a call if only 5% of all calls are shorter? 5% of the calls are shorter than seconds. (Round to two decimal places as needed.)