The daily exchange rates for the five-year period 2003-2008 between currency A and currency B

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January 6th, 2018

The daily exchange rates for the five-year period 2003-2008 between currency A and currency B are well modeled by a normal distribution with mean 1,951 in currency A (to currency B) and standard deviation 0.038 in currency A. Given the model, and using the 68-95-99.7 rule to approximate the probabilities rather than using technology to find the values more precisely, answer the following questions. Please give me step by step directions on the TI-84 technology tooa. What is the probability that on a randomly selected day during the period, a unit of currency B was worth less than 1951 units of currency A?The probability is _____b. What is the probability that on a randomly selected day during this period, a unit of currency B was worth less that 1913 units of currency A?The probability is _____c. What is the probability that on a randomly selected day during this period, a unit of currency B was worth less that 1837 units of currency A?The probability is _____d. What would be more unusual, a day on which a unit of currency B was worth less than 1891 units of currency A or more than 2008 of currency A?The answer will be Either less than 1891 or more than 2008

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