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Please select the correct answer choice for questions 1 and 2 (explanation would also be appreciated) : 1) Given that Z is a standard normal
Please select the correct answer choice for questions 1 and 2 (explanation would also be appreciated) :
1) Given that Z is a standard normal random variable, what is the value of Z if the area between -Z and Z is 0.901?
a.1.96
b.-1.96
c.0.4505
d.1.65
2) If the random variableXis exponentially distributed, then the mean ofXwill be:
a. greater than the median.
b. less than the median.
c. equal to the median.
d. Cannot tell; the answer depends on whatis.
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