Question

The National Health Statistics Reports described a study in which a sample of 354 one-year-old baby...

The National Health Statistics Reports described a study in which a sample of 354 one-year-old baby boys were weighed. Their mean weight was 25.8 pounds with standard deviation 5.3 pounds. A pediatrician claims that the mean weight of one-year-old boys is greater than 25 pounds. Do the data provide convincing evidence that the pediatrician's claim is true? Use the α=0.05 level of significance and the P-value method with the TI-84 Plus calculator.

a. state null and alternative hypothesis. what tail is the hypothesis test?

b. Compute the P-value of the test statistic.

c. Determine whether to reject H0. Use the α=0.05 level of significance.

d. State a conclusion

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
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 215 one year old baby boys in the United States had a mean...
A sample of 215 one year old baby boys in the United States had a mean weight of 23.6 pounds. Assume the population standard deviation is 5.6 pounds. What is the upper bound of the 90% confidence interval for the mean lifetime of the components? Round to two decimal places.
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
In 2013, the Gallup Poll asked 1031 U.S. adults whether they believed that people should pay...
In 2013, the Gallup Poll asked 1031 U.S. adults whether they believed that people should pay sales tax on items purchased over the internet. Of these, 443 said they supported such a tax. Does the survey provide convincing evidence that less than 45% of U.S. adults favor an internet sales tax? Use the α=0.05 level of significance and the P-value method with the TI-84 Plus calculator. a. state null and alternative hypothesis. what tail is the hypothesis test? b. Compute...
Children of a certain age are known to have a mean weight of 85 pounds. A...
Children of a certain age are known to have a mean weight of 85 pounds. A complaint is made that the children living in a municipal home are overfed. As one bit of evidence, 25 randomly selected children are weighed and found to have a mean weight of 87 pounds. It is known that the population standard deviation is 11.6 pounds. Is there convincing evidence at 0.05 significance level that mean weight of the children is greater than 85 pounds?...
The Fair Isaac Corporation (FICO) credit score is used by banks and other lenders to determine...
The Fair Isaac Corporation (FICO) credit score is used by banks and other lenders to determine whether someone is a good credit risk. Scores range from 300 to 850, with a score of 720 or more indicating that a person is a very good credit risk. An economist wants to determine whether the mean FICO score is lower than the cutoff of 720. She finds that a random sample of 60 people had a mean FICO score of 695 with...
A poll surveyed 341 video gamers, and 109 of them said that they prefer playing games...
A poll surveyed 341 video gamers, and 109 of them said that they prefer playing games on a console, rather than a computer or hand-held device. An executive at a game console manufacturing company claims that the proportion of gamers who prefer consoles differs from 30%. Does the poll provide convincing evidence that the claim is true? Use the α=0.10 level of significance and the P-value method with the TI-84 Plus calculator a. state null and alternative hypothesis. what tail...
A random sample of 100 two-month old babies is obtained, and the mean head circumference is...
A random sample of 100 two-month old babies is obtained, and the mean head circumference is found to be 40.6 cm. Assume that the population standard deviation is known to be 1.6 cm. Using a significance level of 0.05, test the claim that the mean head circumference of all two-month old babies is not equal to 40.0cm. a.) State the null and alternative hypothesis. H0: H1: b.) State the appropriate test statistic. c.) Determine the value of the test statistic.  (Round...
The heights of 11-year old boys in the United States are normally distributed.   A random sample of...
The heights of 11-year old boys in the United States are normally distributed.   A random sample of 9 boys was taken and their mean height (in inches) was 56.67 and their sample standard deviation was 3 inches.  Perform a hypothesis test at the 10% significance level to determine if the mean height of 11-year old boys is more than 54 inches.  Give the hypotheses, test statistic, rejection region, P-value, decision, and interpretation.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT