Question

- The lengths of human pregnancies are normally distributed with
a mean of 268 days and a standard deviation of 15 days.
- What is the probability that a pregnancy lasts at least 300 days? (Remember that this means 300 days or more).
- Does it appear likely that a pregnancy would last at least 300 days?
- If we use a definition of premature to be the lowest 3% of pregnancy duration, find the number of days a pregnancy would last that separates the babies considered premature from the babies that were not premature.

Answer #1

The lengths of pregnancies are normally distributed with a mean
of 268 days and a standard deviation of 15 days. a. Find the
probability of a pregnancy lasting 308 days or longer. b. If the
length of pregnancy is in the lowest 3%, then the baby is
premature. Find the length that separates premature babies from
those who are not premature.
a. The probability that a pregnancy will last 308 days or longer
is ?
b. Babies who are born...

Lengths of pregnancies are normally distributed with a mean of
268 days and a standard deviation of 15 days.
a. What percentage of pregnancies last less than 250 days?
b. What percentage of pregnancies last more than 300 days?
c. If a birth is considered premature if the pregnancy lasts
less than 238 days, what is the percentage of premature births?

The lengths of human pregnancies are normally distributed with a
mean of 268 days and a standard deviation of 15 days. What is the
probability that a pregnancy lasts at least 300 days? Write your
answer as a decimal rounded to 4 places.

The lengths of pregnancies are normally distributed with a mean
of 266 days and a standard deviation of 15 days. a. Find the
probability of a pregnancy lasting 307 days or longer. b. If the
length of pregnancy is in the lowest 44%,then the baby is
premature. Find the length that separates premature babies from
those who are not premature.
a. The probability that a pregnancy will last 307 days or longer
is [ ]. (Round to four decimal places)...

The lengths of pregnancies are normally distributed with a mean
of 267 days and a standard deviation of 15 days. a. Find the
probability of a pregnancy lasting 309days or longer. b. If the
length of pregnancy is in the lowest 33%, then the baby is
premature. Find the length that separates premature babies from
those who are not premature.
The probability that a pregnancy will last
309 days or longer is nothing

The lengths of pregnancies are normally distributed with a mean
of 266 days and a standard deviation of 15 days. a. Find the
probability of a pregnancy lasting 309 days or longer. b. If the
length of pregnancy is in the lowest 4 %, then the baby is
premature. Find the length that separates premature babies from
those who are not premature.

The lengths of pregnancies are normally distributed with a mean
of 266 days and a standard deviation of 15 days. a) Find the
probability of a pregnancy lasting 307 days or longer. b) If the
length of pregnancy is in the lowest 44%, then the baby is
premature. Find the length that separates premature babies from
those who are not premature.

The lengths of pregnancies are normally distributed with a mean
of 270 days and a standard deviation of 15 days. a. Find the
probability of a pregnancy lasting 309 days or longer. b. If the
length of pregnancy is in the lowest 22%, then the baby is
premature. Find the length that separates premature babies from
those who are not premature.

The lengths of pregnancies are normally distributed with a mean
of 266 days and a standard deviation of 15 days. a. Find the
probability of a pregnancy lasting 308 days or longer. b. If the
length of pregnancy is in the lowest 3 %, then the baby is
premature. Find the length that separates premature babies from
those who are not premature. Click to view page 1 of the table.
LOADING... Click to view page 2 of the table. LOADING......

The lengths of pregnancies are normally distributed with a mean
of
267267
days and a standard deviation of
1515
days. a. Find the probability of a pregnancy lasting
308308
days or longer. b. If the length of pregnancy is in the
lowest
22%,
then the baby is premature. Find the length that separates
premature babies from those who are not premature.Click to view
page 1 of the table.
LOADING...
Click to view page 2 of the table.
LOADING...
a. The...

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