Suppose that a certain country conducted tests of a certain type of bomb in 2009 and 2013, and another country's defence ministry estimated their power at between 6 and 10 kilotonnes of a certain explosive in 2009 and between 10 and 12 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 defence ministry represent the ranges within which the actual power of the tests lies with a probability of 0.85. Also assume that the defence 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 12 kilotonnes of explosive? (Round to four decimal places as needed.) b) What is the probability that the actual power of the test was higher in 2009 than in 2013? (Round to four decimal places as needed.)

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Suppose that a certain country conducted tests of a certain type of bomb in 2009 and 2013, and another country's defence ministry estimated their power at between 6
and 10 kilotonnes of a certain explosive in 2009 and between 10 and 12 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 defence ministry represent the ranges within which the actual power of
the tests lies with a probability of 0.85. Also assume that the defence 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 12 kilotonnes of explosive?
(Round to four decimal places as needed.)
b) What is the probability that the actual power of the test was higher in 2009 than in 2013?
(Round to four decimal places as needed.)
Transcribed Image Text:Suppose that a certain country conducted tests of a certain type of bomb in 2009 and 2013, and another country's defence ministry estimated their power at between 6 and 10 kilotonnes of a certain explosive in 2009 and between 10 and 12 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 defence ministry represent the ranges within which the actual power of the tests lies with a probability of 0.85. Also assume that the defence 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 12 kilotonnes of explosive? (Round to four decimal places as needed.) b) What is the probability that the actual power of the test was higher in 2009 than in 2013? (Round to four decimal places as needed.)
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