Question

The weight of male babies less than 2 months old in the United States is normally distributed with mean 11.8 pounds and standard deviation 2.6 pounds.

(a) What proportion of babies weigh more than 15 pounds?

(b) What porportion of babies weigh less than 12 pounds?

(c) What proportion of babies weigh between 11 and 15 pounds?

(d) Is it unusual for a baby to weigh more than 17 pounds? Round answers to four decimal places.

Answer #1

The weight of male babies less than 2 months old in the United
States is normally distributed with mean 11.4 pounds and standard
deviation 2.7 pounds. (a) What proportion of babies weigh more than
14 pounds? (b) What proportion of babies weigh less than 14 pounds?
(c) What proportion of babies weigh between 10 and 15 pounds? (d)
Is it unusual for a baby to weigh more than 17 pounds? Round
answers to four decimal places.

Baby weights: the weight of male babies less than 2 months old
in the United States is normally distributed with mean 11.5 pounds
and standard deviation 2.5 pounds What proportion of babies weigh
more than 13 pounds? What proportion of babies weigh less than 15
pounds? What proportion of babies weigh between 9 and 14 pounds? Is
it unusual for a baby to weigh more than 15 pounds? Round 4
places

baby weights: the weight of male babies less than 2 months old
in the United States is normally distributed with mean 11.5 pounds
and a standard deviation of 2.5 pounds. what portion of the babies
weigh between 9 and 14 pounds?

Question 5:
Baby weights: The weight of male babies less
than
2
months old in the United States is normally distributed with
mean
11.6
pounds and standard deviation
2.8
pounds. Use the TI-84 Plus calculator to answer the
following.
(a) What proportion of babies weigh more than
13
pounds?
(b) What proportion of babies weigh less than
15
pounds?
(c) What proportion of babies weigh between
9
and
13.2
pounds?
(d) Is it unusual for a baby to weigh more...

Baby weights: The weight of male babies less than 2 months old
in the United States is normally distributed with mean 12 pounds
and standard deviation 3.7 pounds. Use the Cumulative Normal
Distribution Table to answer the following.
(a) Find the 84th percentile of the baby weights.
(b) Find the 13th percentile of the baby weights.
(c) Find the first quartile of the baby weights.

Suppose that the weight of male babies less than 2 months old is
normally distributed with mean 11.5 pounds and standard deviation
2.7 pounds. A sample of 36 babies is selected. What is the
probability that the average weight of the sample is less than
11.13 pounds?

(please make answer clear)
Big Babies: A public health organization reports that 19% of
baby boys 6 - 8 months old in the United States weigh more than 20
pounds. A sample of 15 babies is studied.
(a) What is the mean number who weigh more than 20 pounds in a
sample of 15 babies aged 6 - 8 months? Round the answer to two
decimal places. The mean number who weigh more than 20 pounds is
__??
b) What...

The weight of adult male grizzly bears living in the wild
continental United States is normally distributed with a mean of
500 pounds and a standard deviation of 50 pounds. The weight of
adult female grizzly bears is normally distributed with a mean of
300 pounds and a standard deviation of 40 pounds.
(a) What is the probability that a randomly selected male
grizzly bear weighs between 445 and 520 pounds? Make sure to find
all appropriate z-scores and show...

Show your calculations in detail please..
Suppose that the weights of babies is normally distributed with
mean of 6.3 kilograms and a standard deviation of 0.8.
a) (15 pts) What is the
probability that a baby boy will weigh more than 7.3 kilograms?
b) (15 pts) What is the
probability that a baby boy will weigh less than 5.3 kilograms?

The birth weight of newborn babies is normally distributed with
a mean of 7.5 lbs and a standard deviation of 1.2 lbs.
a. Find the probability that a randomly selected newborn baby
weighs between 5.9 and 8.1 pounds. Round your answer to 4 decimal
places.
b. How much would a newborn baby have to weigh to be in the top
6% for birth weight? Round your answer to 1 decimal place.

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