Question

Assume that the population mean weight for ten year old boys is μ = 88 pounds...

Assume that the population mean weight for ten year old boys is μ = 88 pounds with population standard deviation σ = 2.2 pounds. Also assume that the data is normally distributed. What proportion of ten year old boys weigh more than 91 pounds?

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

Homework Answers

Answer #1

Solution-

Proportion of ten year old boys weigh more than 91 pounds is

0.0863

◆ Probability calculation-

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
the mean weight for 6 year old american boys is about 50 with a standard deviation...
the mean weight for 6 year old american boys is about 50 with a standard deviation of 8 pounds. for 13 year old boys mean is about 95 pounds with a standard deviation of 15 pounds. assume the weights are distributed nornally for thjs problem. what is the probability that two random 6 year old boys will together weigh more than a random thirteen year ild boy?
Assume weights of 10-year-old boys vary according to a Normal distribution with mean μ = 70...
Assume weights of 10-year-old boys vary according to a Normal distribution with mean μ = 70 pounds and standard deviation σ = 10 pounds. What percentage of this population is greater than 80 pounds?  
Boys of a certain age are known to have a mean weight of μ = 85...
Boys of a certain age are known to have a mean weight of μ = 85 pounds. A complaint is made that the boys living in a municipal children's home are underfed. As one bit of evidence, n = 25 boys (of the same age) are weighed and found to have a mean weight of x = 80.94 pounds. It is known that the population standard deviation σ is 11.6 pounds (the unrealistic part of this example!). Based on the...
Babies: A sample of 25 one-year-old girls had a mean weight of 24.1 pounds with a...
Babies: A sample of 25 one-year-old girls had a mean weight of 24.1 pounds with a standard deviation of 4.3 pounds. Assume that the population of weights is normally distributed. A pediatrician claims that the standard deviation of the weights of one-year-old girls is less than 4 pounds. Do the data provide convincing evidence that the pediatrician's claim is true? Use the 0.01 level of significance.
A sample of 249 one-year-old baby boys in the United States had a mean weight of...
A sample of 249 one-year-old baby boys in the United States had a mean weight of 24.2 pounds. Assume the population standard deviation is 4.7 pounds. What is the upper bound of the 90% confidence interval for the mean lifetime of the components?
a sample of 279 one year old baby boys in the US had a mean weight...
a sample of 279 one year old baby boys in the US had a mean weight of 25.9 pounds. assume the population standard deviation is 5.9 pounds. what is the upper bound of the 90% confidence interval for the mean lifetime of the components. round your answer to two decimal places
The weight of male babies less than 2 months old in the United States is normally...
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.
The weight of male babies less than 2 months old in the United States is normally...
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.
1. In the united states the population mean height for 4 year old boys is 39...
1. In the united states the population mean height for 4 year old boys is 39 inches, Suppose a random sample of 32 NON -US  4 year old boys showed a sample mean of 38.2 inches with a standard deviation of 3.1inches. The boys were independently sampled. Assume the heights are normally distributed in the population. Determine weather the population mean for non us boys is significantly different from the US population mean, use a significance level of 5%
The heights of European 13-year-old boys can be approximated by a normal model with mean μ...
The heights of European 13-year-old boys can be approximated by a normal model with mean μ of 63.1 inches and standard deviation σ of 2.32 inches. A random sample of 9 European 13-year-old boys is selected. What is the probability that the sample mean height x is greater than 65.7 inches? (use 4 decimal places in your answer)
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT