Multiple choices 23/50
(Choose 1 answer)
A. 0.61
B. None of the other choices is correct
C. 0.50
D. 0.53
Ε. 0.39
Next
In 2004, the infant mortality rate (per 1,000 live births) for the 50 states and the District of Columbia had a mean of 6.98 and a standard deviation of 1.62. Assuming that the distribution is normal, what percentage of states had an infant mortality rate between 5 and 7 percent?
Let P(Z<-1.22)=0.11, P(Z<0.01)=0.50, P(Z<-8.27)=0, P(Z<0.07)=0.53.
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