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Suppose the lengths of human pregnancies are normally distributed with u = 266 days and o = 16 days. Complete parts (a) and (b) below.
(a) The figure to the right represents the normal curve with u = 266 days and a = 16 days. The area to the left of X = 230 is 0.0122. Provide two interpretations of this area.
Provide one interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice.
(Type integers or decimals.)
A. The proportion of human pregnancies that last less than 230 days is 0.0122 .
B. The proportion of human pregnancies that last more than days is
Provide a second interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice.
(Type integers or decimals.)
O
The probability that a randomly selected human pregnancy lasts less than 230 days is 0.0122 .
B. The probability that a randomly selected human pregnancy lasts more than
days is
(b) The figure to the right represents the normal curve with u = 266 days and o = 16 days. The area between x = 280 and x = 300 is 0.1740. Provide two interpretations of this area.
Provide one interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice,
(Type integers or decimals. Use ascending order.)
A. The proportion of human pregnancies that last less than |or more than Il|days is .
O B. The proportion of human pregnancies that last between and days is