Question

The weights for newborn babies is approximately normally distributed with a mean of 6 pounds and a standard deviation of 1.7 pounds. Consider a group of 900 newborn babies: 1. How many would you expect to weigh between 5 and 9 pounds? 2. How many would you expect to weigh less than 8 pounds? 3. How many would you expect to weigh more than 7 pounds? 4. How many would you expect to weigh between 6 and 10 pounds?

Answer #1

The weights for newborn babies is approximately normally
distributed with a mean of 5.4 pounds and a standard deviation of
1.6 pounds.
Consider a group of 1100 newborn babies:
1. How many would you expect to weigh between 3 and 8 pounds?
2. How many would you expect to weigh less than 7 pounds?
3. How many would you expect to weigh more than 6 pounds?
4. How many would you expect to weigh between 5.4 and 9
pounds?
HINT:...

Birth weight, in grams, of newborn babies are normally
distributed with a mean of 3290 grams and a standard deviation of
520 grams. Find the percentage of newborns that weigh between 3000
and 4000 grams. Consider again the birth weights of newborn babies,
where the mean weight is 3290 grams and the standard deviation is
520 grams. Find the weight, in grams, that would separate the
smallest 4% of weights of newborns from the rest.

Problem 4 –Weights of newborn babies
Paediatricians measure the weights of newborn babies to
closely monitor their growth in the first six months of their life.
A study reveals that weights of newborn babies are normally
distributed with a mean of 3.2kg and a standard deviation of
0.4kg.
a) Find the probability that a randomly selected newborn baby
would have a weight more than 3.5kg. Display working. 1 mark
b) Eight newborn babies are randomly selected. What is the
probability...

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.

Some sources report that the weights of full-term newborn babies
in a certain town have a mean of 7 pounds and a standard deviation
of 0.6 pounds and are normally distributed.
a. What is the probability that one newborn baby will have a
weight within 0.6 pounds of the mean is, between 6.4 and 7.6
pounds, or within one standard deviation of the mean?
b. What is the probability that the average of four babies'
weights will be within 0.6...

Suppose that the weights of professional baseball players are
approximately normally distributed, with a mean of 207 pounds and
standard deviation of 24 pounds.
What proportion of players weigh between 200 and 250
pounds?
What is the probability that the mean weight of a team of 25
players will be more than 215 pounds?
Could you please explain too?

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?

Suppose that the weights of professional baseball players are
approximately normally distributed, with a mean of 207 pounds and
standard deviation of 24 pounds. a. What proportion of players
weigh between 200 and 250 pounds? b. What is the probability that
the mean weight of a team of 25 players will be more than 215
pounds?

The weights of a certain dog breed are approximately normally
distributed with a mean of 53 pounds, and a standard deviation of
5.9 pounds. Answer the following questions. Write your answers in
percent form. Round your answers to the nearest tenth of a
percent.
a) Find the percentage of dogs of this breed that weigh less than
53 pounds. %
b) Find the percentage of dogs of this breed that weigh less than
49 pounds. %
c) Find the percentage...

The weights of a certain dog breed are approximately normally
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questions. Write your answers in percent form. Round your answers
to the nearest tenth of a percent.
a) Find the percentage of dogs of this breed that weigh less
than 50 pounds. ______ %
b) Find the percentage of dogs of this breed that weigh less
than 47...

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