Question
In: Statistics and Probability
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 sigmaequals20 days. ?(a) What proportion of pregnancies lasts more than 287 ?days? ?(b) What proportion of pregnancies lasts between 247 and 267 ?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 period is less than 212 days. Are very preterm babies? unusual?
Solutions
orchestra answered 2 years agoRelated Solutions
The lengths of a particular animal's pregnancies are approximately normally distributed, with mean muequals271 days and...
The lengths of a particular animal's pregnancies are
approximately normally distributed, with mean muequals271 days and
standard deviation sigmaequals8 days. (a) What proportion of
pregnancies lasts more than 283 days? (b) What proportion of
pregnancies lasts between 269 and 275 days? (c) What is the
probability that a randomly selected pregnancy lasts no more than
267 days? (d) A "very preterm" baby is one whose gestation
period is less than 251 days. Are very preterm babies unusual?
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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
period is less than 227 days. Are very preterm babies unusual?
(a) The...
The lengths of a particular animal's pregnancies are approximately normally distributed, with mean μ=267 days and...
The lengths of a particular animal's pregnancies are
approximately normally distributed, with mean μ=267 days and
standard deviation σ=16 days.
(a) What proportion of pregnancies lasts more
than 275 days?
(b) What proportion of pregnancies lasts
between 263 and 271 days?
(c) What is the probability that a randomly
selected pregnancy lasts no more than 247 days?
(d) A "very preterm" baby is one whose
gestation period is less than 243 days. Are very preterm babies
unusual?
The lengths of a particular animal's pregnancies are approximately normally distributed, with mean muμequals=254 days and...
The lengths of a particular animal's pregnancies are
approximately normally distributed, with mean
muμequals=254
days and standard deviation
sigmaσequals=20
days.
(a) What proportion of pregnancies lasts more than 264
days?
(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?
The lengths of a particular animal's pregnancies are approximately normally distributed, with mean μ=252 days and...
The lengths of a particular animal's pregnancies are
approximately normally distributed, with mean μ=252 days and
standard deviation σ=20 days.
(a) What proportion of pregnancies lasts more than 267
days?
(b) What proportion of pregnancies lasts between 227 and 257
days?
(c) What is the probability that a randomly selected pregnancy
lasts no more than 237 days?
(d) A "very preterm" baby is one whose gestation period is
less than 202 days. Are very preterm babies unusual?
The lengths of a particular animal's pregnancies are approximately normally distributed, with mean μ= 272 days...
The lengths of a particular animal's pregnancies are
approximately normally distributed, with mean μ= 272
days and standard deviation σ= 88 days.
(a) What proportion of pregnancies lasts more than 286
days?
(b) What proportion of pregnancies lasts between 262 and 274
days?
(c) What is the probability that a randomly selected pregnancy
lasts no more than 264days?
(d) A "very preterm" baby is one whose gestation period is
less than 260 days. Are very preterm babies unusual?
The lengths of a particular animal's pregnancies are approximately normally distributed, with mean mu equals256 days...
The lengths of a particular animal's pregnancies are
approximately normally distributed, with mean mu equals256 days
and standard deviation sigma equals8 days.
(a) What proportion of pregnancies lasts more than 258
days?
(b) What proportion of pregnancies lasts between 242 and 260
days?
(c) What is the probability that a randomly selected pregnancy
lasts no more than 252 days?
(d) A "very preterm" baby is one whose gestation period is
less than 236 days. Are very preterm babies unusual?
The lengths of a particular animal's pregnancies are approximately normally distributed, with mean μ=252 days and...
The lengths of a particular animal's pregnancies are
approximately normally distributed, with mean μ=252 days and
standard deviation σ=16 days.
(a) What proportion of pregnancies lasts more than 272
days?
(b) What proportion of pregnancies lasts between 248 and 260
days?
(c) What is the probability that a randomly selected pregnancy
lasts no more than 224 days?
(d) A "very preterm" baby is one whose gestation period is
less than 216 days. Are very preterm babies unusual?
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