Question

Pediatricians have been able to determine that the distribution of birth weights for boys is approximately...

Pediatricians have been able to determine that the distribution of birth weights for boys is approximately normal with mean 3494 grams and standard deviation 603 grams. They have also determined that the distribution of birth weights for girls is approximately normal with mean 3266 grams and standard deviation 570 grams.

1. There is another baby named Brittney who has a birth weight of 3137 grams. Who has a relatively higher birthweight: Brittney or Brock. Show all work and calculations. (Hint: use Z-scores)

2. Find the first quartile for female birthweights. Round your answer to 1 decimal place.

3. Find the third quartile for female birthweights. Round your answer to 1 decimal place.

brocks birth weight was 3232 grams

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Birth weights in the United States have a distribution that is approximately normal with a mean...
Birth weights in the United States have a distribution that is approximately normal with a mean of 3396 g and a standard deviation of 576 g. Apply Table A-2 or statistics technology you can use to answer the following questions: (a) One definition of a premature baby is the the birth weight is below 2500 g. If a baby is randomly selected, find the probability of a birth weight below 2500 g. (b) Another definition of a premature baby is...
Birth weights in the United States have a distribution that is approximately normal with a mean...
Birth weights in the United States have a distribution that is approximately normal with a mean of 3396 g and a standard deviation of 576 g. Apply Table A-2 or statistics technology you can use to answer the following questions: (a) One definition of a premature baby is the the birth weight is below 2500 g. If a baby is randomly selected, find the probability of a birth weight below 2500 g. (b) Another definition of a premature baby is...
baby weights following are weights in pounds for random samples of 15 newborn baby boys and...
baby weights following are weights in pounds for random samples of 15 newborn baby boys and baby girls born in Denver in 2011. boxplot indicates that the samples come from populations that are approximately normal. let u1 denote the mean weught of boys and u2 denoted the mean weight of girls. can you conclude that the mean weight of boys is less than the mean weight of girls? use alpha=0.01 level and p value method with the tble boys: 5.9,6.4,7.3,6.6,7.6,7.5,6.9,7.4,6.4,6.9,6.3,6.4,6.4,7.4,7.7...
In a certain​ country, the mean birth weight for boys is 3.28kg, with a standard deviation...
In a certain​ country, the mean birth weight for boys is 3.28kg, with a standard deviation of 0.57kg. Assuming that the distribution of birth weight is approximately​ normal, complete parts a through e below. a. A baby is considered of low birth weight if it weighs less than 2.5 kg. What proportion of baby boys in this country are born with low birth​ weight? The proportion of baby boys that are born with a low birth weight is ? b....
The weights of newborn baby boys born at a local hospital are believed to have a...
The weights of newborn baby boys born at a local hospital are believed to have a normal distribution with a mean weight of 3951 grams and a variance of 60,025 . If a newborn baby boy born at the local hospital is randomly selected, find the probability that the weight will be between 3485 and 4147 grams. Round your answer to four decimal places.
In a certain​ country, the mean birth weight for boys 3.23 ​kg, with a standard deviation...
In a certain​ country, the mean birth weight for boys 3.23 ​kg, with a standard deviation of 0.58 kg. Assuming that the distribution of birth weight is approximately​ normal, complete parts a through e below.a. A baby is considered of low birth weight if it weighs less than 2.5 kg. a. What proportion of baby boys in this country are born with low birth​ weight? b. What is the​ z-score for a baby boy that weighs 1.5 kg​ (defined as...
Assume that newborn girls have birth weights with a mean of 3058 grams and a standard...
Assume that newborn girls have birth weights with a mean of 3058 grams and a standard deviation of 704 grams. A random sample of 100 newborn girls is obtained and they have a mean birth weight of 2855 grams. What is the probability of randomly selecting another 100 newborn girls and getting a mean birth weight that is 2855 grams or​ lower? Does it seem like a sample mean of 2855 grams is​ unusual? The probability of getting a mean...
low-birth-weight babies - Researchers in Norway an- alyzed data on the birth weights of 400,000 newborns...
low-birth-weight babies - Researchers in Norway an- alyzed data on the birth weights of 400,000 newborns over a 6-year period. The distribution of birth weights is Normal with a mean of 3668 grams and a standard deviation of 511 grams.Babies that weigh less than 2500 grams at birth are classified as “low birth weight.” (a) What percent of babies will be identified as low birth weight? (b) Find the quartiles of the birth weight distribution.
4.39 Weights of pennies: The distribution of weights of United States pennies is approximately normal with...
4.39 Weights of pennies: The distribution of weights of United States pennies is approximately normal with a mean of 2.5 grams and a standard deviation of 0.03 grams. Use Normalcdf as needed. (a) What is the probability that a randomly chosen penny weighs less than 2.4 grams? 0.0004 Correct (please round to four decimal places) (b) Describe the sampling distribution of the mean weight of 10 randomly chosen pennies. Mean: 2.5 Correct grams (please round to one decimal place) Standard...
A study studied the birth weights of 2,032 babies born in the United States. The mean...
A study studied the birth weights of 2,032 babies born in the United States. The mean weight was 3234 grams with a standard deviation of 871 grams. Assume that birth weight data are approximately bell-shaped. Estimate the number of newborns who weighed between 1492 grams and 4976 grams. Write only a number as your answer. Round your answer to the nearest whole number.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT