Question

In: Statistics and Probability

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 3311 grams and a standard deviation of 404 grams. If a newborn baby boy born at the local hospital is randomly selected, find the probability that the weight will be less than 3715 grams. Round your answer to four decimal places.

Solutions

Expert Solution

Sol

mean=3311

sd=404

X~N(3311,404)

P(X<3715)

P(Z<3715-3311/404)

P(Z<1)

=from normal distribution table

p(z<1)=0.8413

ANSWER:

0.8413

orchestra answered 2 years ago
Next > < Previous

Related Solutions

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 3915 grams and a variance of 429,025. If a newborn baby boy born at the local hospital is randomly selected, find the probability that the weight will be less than 4570 grams. Round your answer to four decimal places.
Baby weights: Following are weights in pounds for random samples of 19 newborn baby boys and...
Baby weights: Following are weights in pounds for random samples of 19 newborn baby boys and baby girls born in Denver in 2011 . Boxplots indicate that the samples come from populations that are approximately normal. Let μ1 denote the mean weight of boys and μ2 denote the mean weight of girls. Can you conclude that the mean weights differ between boys and girls? Use the =α0.10 level and the P -value method with the table. Boys 7.6 6.4 8.1...
Newborn Care Case Study Scenario: Baby H was just born in a hospital that provides single-room...
Newborn Care Case Study Scenario: Baby H was just born in a hospital that provides single-room maternity care. This room allows the infant to remain with the parents after birth. H’s mother was in labor for 12 hours and gave birth vaginally. Baby H is the first baby born to these parents. The nurse will complete the physical assessment and observe for physiologic changes in the infant’s transition from intrauterine to extrauterine life. Name the three phases that occur during...
The percentage of newborn baby boys in the United States is 51.2%. In a recent sample...
The percentage of newborn baby boys in the United States is 51.2%. In a recent sample of 964 births, 473 of the newborn babies were boys. Use a level of significance of 0.02 to test the claim that the percentage of newborn baby boys is not equal to 51.2%. Show your work to receive credit.
20 babies born in one week in a local hospital had the following weights (in pounds):...
20 babies born in one week in a local hospital had the following weights (in pounds): 9.6, 8.8, 5.1, 7.7, 6.1, 8.9, 8, 9.2, 5.7, 9.1, 8.5, 7.3, 9.3, 9.6, 5.2, 9.9, 7.6, 9, 7.2, 8.5 (a) Create a QQ plot and histogram of the weights. Do you think it is reasonable to assume that the population distribution is normal? Explain your answer. (b) Regardless of your answer to (a), use R to perform the bootstrap with 3000 resamplings to...
The weights of baby boys at six months is normally distributed with a mean of 17.25...
The weights of baby boys at six months is normally distributed with a mean of 17.25 lbs. and a standard deviation of 2.0 lbs. By an age of twelve months, the mean increases to 22.50 lbs. and the standard deviation is 2.2 lbs. Which age group has the wider distribution? When baby turn 1 year old has the wider dist. What percentage of the twelve-month old boys weigh more than 26.9 lbs.? What percentage of six-month old boys weigh between...
Distributions: List the characteristics of a normal distribution. The weights of baby boys at six months...
Distributions: List the characteristics of a normal distribution. The weights of baby boys at six months is normally distributed with a mean of 17.25 lbs. and a standard deviation of 2.0 lbs. By an age of twelve months, the mean increases to 22.50 lbs. and the standard deviation is 2.2 lbs. Which age group has the wider distribution? What percentage of the twelve-month old boys weigh more than 26.9 lbs.? What percentage of six-month old boys weigh between 15.25 lbs....
The distribution of weights for 12 month old baby boys in the US is approximately normal...
The distribution of weights for 12 month old baby boys in the US is approximately normal with mean 22.5 pounds and a standard deviation of 2.2 pounds. a. if a 12 month old boy weights 20.3 pounds, what weight percentile is he in approximately. b. if a 12 month old boy is in the 84th percentile in weight, estimate his weight. c. Estimate the weight of a 12 month old boy who is in the 25th percentile by weight. d....
9) A zoologist weights 15 newborn African elephants born in captivity. The mean weight of the...
9) A zoologist weights 15 newborn African elephants born in captivity. The mean weight of the sample is 184 lbs with a standard deviation of 6.7 lbs. a) Find a 99% confidence interval for the true weight of newborn African elephants born in captivity. b) Provide the margin of error of the interval as your answer. Round your answer to 1 decimal place.
Birth weights at a local hospital have a Normal distribution with a mean of 110 oz...
Birth weights at a local hospital have a Normal distribution with a mean of 110 oz and a standard deviation of 15 oz. You take a random sample of babies born at the hospital and find the mean weight. What is the probability that the mean weight will be between 111 and 114 in a sample of 50 babies born at this hospital? Round to 3 decimal places.
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT