Mathematics, 15.07.2019 22:30 keidyhernandezm
Based on the service records from american express, it generally takes ten minutes to answer a customer’s question on his/her financial charges, with the standard deviation of three minutes. in other words, the time to answer customers’ questions on financial charges follows a normal distribution of n(10,3). given above information, how many questions can be answered with in four minutes to sixteen minutes?
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