Question
In: Statistics and Probability
The lengths of a particular animal's pregnancies are approximately normally distributed, with mean mu equals280days and...
The lengths of a particular animal's pregnancies are approximately normally distributed, with mean
mu
equals280days and standard deviation
sigma
equals12
days.
(a) What proportion of pregnancies lasts more than
301
days?
(b) What proportion of pregnancies lasts between
262
and
283
days?
(c) What is the probability that a randomly selected pregnancy lasts no more than
256
days?
(d) A "very preterm" baby is one whose gestation period is less than
250
days. Are very preterm babies unusual?
LOADING...
Click the icon to view a table of areas under the normal curve.
(a) The proportion of pregnancies that last more than
301
days is
nothing
.
(Round to four decimal places as needed.)
(b) The proportion of pregnancies that last between
262
and
283
days is
nothing
.
(Round to four decimal places as needed.)
(c) The probability that a randomly selected pregnancy lasts no more than
256
days is
nothing
.
(Round to four decimal places as needed.)
(d) A "very preterm" baby is one whose gestation period is less than
250
days. Are very preterm babies unusual?
The probability of this event is
nothing
,
so it
▼
would not
would
be unusual because the probability is
▼
greater
less
than 0.05.
(Round to four decimal places as needed.)
Solutions
orchestra answered 1 year agoRelated Solutions
The lengths of a particular animal's pregnancies are approximately normally distributed, with mean mu equals256 days...
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The lengths of a particular animal's pregnancies are approximately normally distributed, with mean mu equals280 days...
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approximately normally? distributed, with mean muequals257 days and
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probability that a randomly selected pregnancy lasts no more than
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LOADING... Click the...
The lengths of a particular animal's pregnancies are approximately normally distributed, with mean = 280 days...
The lengths of a particular animal's pregnancies are
approximately normally distributed, with mean = 280 days and
standard deviation = 20 days.
(a) What proportion of pregnancies lasts more than 285 days?
(b) What proportion of pregnancies lasts between 245 and 295
days?
(c) What is the probability that a randomly selected pregnancy
lasts no more than 255 days?
(d) The probability of a "very preterm" baby is ? This event
would/would not be unusual because the...
The lengths of a particular animal's pregnancies are approximately normally distributed, with mean muequals268 days and...
The lengths of a particular animal's pregnancies are
approximately normally distributed, with mean muequals268 days and
standard deviation sigmaequals20 days. (a) What proportion of
pregnancies lasts more than 293 days? (b) What proportion of
pregnancies lasts between 233 and 278 days? (c) What is the
probability that a randomly selected pregnancy lasts no more than
263 days? (d) A "very preterm" baby is one whose gestation
period is less than 238 days. Are very preterm babies unusual?
The lengths of a particular animal's pregnancies are approximately normally distributed, with mean muequals257 days and...
The lengths of a particular animal's pregnancies are
approximately normally distributed, with mean muequals257 days and
standard deviation sigma equals20 days. (a) What proportion of
pregnancies lasts more than 267 days? (b) What proportion of
pregnancies lasts between 242 and 272 days? (c) What is the
probability that a randomly selected pregnancy lasts no more than
217 days? (d) A "very preterm" baby is one whose gestation
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(b) What proportion of pregnancies lasts
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(c) What is the probability that a randomly
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(d) A "very preterm" baby is one whose
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The lengths of a particular animal's pregnancies are approximately normally distributed, with mean muμequals=254 days and...
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approximately normally distributed, with mean
muμequals=254
days and standard deviation
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days.
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(b) What proportion of pregnancies lasts between 244 and 269
days?
(c) What is the probability that a randomly selected pregnancy
lasts no more than 229 days?
(d) A "very preterm" baby is one whose gestation period is
less than 204 days. Are very preterm babies unusual?
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