Question

O Baby! The weights of 3-month-old baby girls are normally distributed with a mean of 12.9...

O Baby! The weights of 3-month-old baby girls are normally distributed with a mean of 12.9 pounds and a standard deviation of 1.6. In an inner city pediatric facility, a random sample of 16 3-month-old baby girls was selected and their weights were recorded.

a. What is the probability that the average weight of the 16 baby girls is more than 14 pounds?

b. What is the probability that the average weight of the 16 baby girls is less than 11 pounds?

c. If the average weight of the 16 girls at this inner city pediatric facility was 11 pounds, what conclusions might you draw? Explain.

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Baby weights: Following are weights, in pounds, of 11 two–month–old baby girls. It is reasonable to...
Baby weights: Following are weights, in pounds, of 11 two–month–old baby girls. It is reasonable to assume that the population is approximately normal. 12.23 12.32 11.87 12.34 12.66 8.51 14.13 12.95 10.30 9.34 8.63 (a) Construct a 99 % confidence interval for the mean weight of two–month–old baby girls. (b) According to the National Health Statistics Reports, the mean weight of two–month–old baby boys is 11.1 pounds. Based on the confidence interval, is it reasonable to believe that the mean...
: Following are weights, in pounds, of 11 two-month-old baby girls. It is reasonable to assume...
: Following are weights, in pounds, of 11 two-month-old baby girls. It is reasonable to assume that the population is approximately normal. 12.34 9.34 8.51 11.87 8.63 12.32 12.23 12.95 10.30 11.48 8.51 Construct a 99.8% interval for the mean weight of two-month-old baby girls. Round the answers to three decimal places.
In a random sample of 12 two-month-old baby girls, the sample mean weight was 11.40 pounds...
In a random sample of 12 two-month-old baby girls, the sample mean weight was 11.40 pounds and the population standard deviation was 1.80 pounds. Assume that the population of weights for two-month old baby girls is approximately normal. a) Construct a 98% confidence interval for the population mean weight of two-month-old baby girls. Be sure to include the following: The formula that’s used to calculate the confidence interval. If you used a built-in calculator program to compute the lower and...
1. In a random sample of 12 two-month-old baby girls, the sample mean weight was 11.40...
1. In a random sample of 12 two-month-old baby girls, the sample mean weight was 11.40 pounds and the population standard deviation was 1.80 pounds. Assume that the population of weights for two-month old baby girls is approximately normal. a) Construct a 98% confidence interval for the population mean weight of two-month-old baby girls. Be sure to include the following: The formula that’s used to calculate the confidence interval. If you used a built-in calculator program to compute the lower...
Suppose birth weights of human babies are normally distributed with a mean of 120 ounces and...
Suppose birth weights of human babies are normally distributed with a mean of 120 ounces and a stdev of 16 ounces (1lb = 16 ounces). 1. What is the probability that a baby is at least 9 lbs 11 ounces? 2. What is the probability that a baby weighs less than 10 lbs (160 ounces)? 3. What weight is the 90th percentile?
Suppose that the birth weights of infants are Normally distributed with mean 120 ounces and a...
Suppose that the birth weights of infants are Normally distributed with mean 120 ounces and a standard deviation of 18 ounces. (Note: 1 pound = 16 ounces.) a) Find the probability that a randomly selected infant will weight less than 5 pounds. b) What percent of babies weigh between 8 and 10 pounds at birth? c) How much would a baby have to weigh at birth in order for him to weight in the top 10% of all infants? d)...
baby weights: the weight of male babies less than 2 months old in the United States...
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...
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...
1. The weights of 9 year old male children are normally distributed population with a mean...
1. The weights of 9 year old male children are normally distributed population with a mean of 73 pounds and a standard deviation of 12 pounds. Determine the probability that a random sample of 21 such children has an average less than 72 pounds. Round to four decimal places. 2. A normally distributed population has a mean of 80 and a standard deviation of 17. Determine the probability that a random sample of size 26 has an average greater than...
The weights of bowling balls are normally distributed with mean 11.5 pounds and standard deviation 2.7...
The weights of bowling balls are normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds. A sample of 36 bowling balls is selected. What is the probability that the average weight of the sample is less than 11.03 pounds?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT