Suppose that a certain country conducted tests of a certain type of bomb in 2009 and 2013, and another country's defense ministry estimated their power at between 6 and 9 kilotonnes of a certain explosive in 2009 and between 9 and 10 kilotonnes of the explosive in 2013. "The power of the country's bomb tests increased between 2009 and 2013," stated a commentator. Assume that the ranges given by the second country's defense ministry represent the ranges within which the actual power of the tests lies with a probability of 0.85. Also, assume that the defense ministry's estimates are Normally distributed. Complete parts (a) and (b) below.
a)What is the probability that the actual power of the 2009 test was greater than 10 kilotonnes of explosive?
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