Confidence interval for the mean height

Assignment Help Basic Statistics
Reference no: EM131870373

An anthropologist measured the heights (in inches) of a random sample of 100 men from a certain population, and found the sample mean and variance to be 71 and 9 respectively.

(a) Find a 95% confidence interval for the mean height it of the whole population.

(b) Find a 99% confidence interval.

Reference no: EM131870373

Questions Cloud

Longitudinal designs and cross-sectional designs : 1. What are the advantages of longitudinal designs and cross-sectional designs?
Interest rate is earned when investment doubles : Approximately what interest rate is earned when an investment doubles over 11.3 years?
Calculate the issue price of the bonds : Directions (20 points): Prepare your responses on a separate Excel spreadsheet as directed on the Problem Set 3 directions. Calculate the issue price of bonds
Identify specific stocks as either taxable or not taxable : In addition, the brokerage office would like help their FundManagers identify specific stocks as either taxable or not taxable.
Confidence interval for the mean height : (a) Find a 95% confidence interval for the mean height it of the whole population. (b) Find a 99% confidence interval.
What areas of the city had the highest crime rate : What areas of the city had the highest crime rate in 2016? How does this compare to areas that had the highest crime rate in 2006? Back up your answer.
Confidence interval for the mean consumption : Construct a 95% confidence interval for the mean consumption of all American families (at this income and asset level).
Mean reaction time : Find a 95 confidence interval for the mean reaction time of the whole population of drivers.
What is the probability that a statistician who constructs : 1. What is the probability that a statistician who constructs 20 independent 95% confidence intervals will err:

Reviews

Write a Review

Basic Statistics Questions & Answers

  An educational psychologist is interested in knowing whether

An educational psychologist is interested in knowing whether the experience of attending preschool is related to subsequent sociability.

  Ratio of two independent sample variances

At the .01 significance level, can we conclude that there is more variation in the selling prices of the oceanfront homes?

  Appraising the values of ten houses in the neighborhood

A neighborhood home owners association suspects that the recent appraisal values of the houses in the neighborhood conducted by the county government.

  A manufacturer of strapping tape claims that the tape has a

a manufacturer of strapping tape claims that the tape has a mean breaking strength of 500 psi. experience has shown

  Probability-randomly elected man meets height requirement

Heights of adult men between 18 and 34 years of age are normally distributed with mean 69.1 inches and standard deviation 2.92 inches.

  Probability of basketball free throws

A basketball player makes 80% of his free throws. If he attempts eight free throws during the next game, what is the probability that he will make more than his average?

  The manufacture of compact disc players

When circuit boards used in the manufacture of compact disc players are tested, the long-run percentage of defectives is 5%. Suppose that a batch of 250 boards has been received and that the condition of any particular board is independent of tha..

  Would the range of individual weight losses in the sample

Would the range of individual weight losses in the sample be likely to increase, decrease, or remain about the same if the sample size were increased fourfold? Explain.

  What inferential statistics is and why to use it

Be certain to mention what inferential statistics is and why we use it, what is random sampling, which is statistical significance and why we test it.

  Describe effects of increased carbon dioxide in atmosphere

Scientists debate the effects of increased carbon dioxide in the atmosphere, largely the result of burning fossil fuels. But atmospheric carbon dioxide levels.

  Interpretation of statistical tests

A gambler has developed two strategies for betting in the game of blackjack. To test these strategies, he decides to go gambling on a casino boat.

  Testing the store claim

A local hardware store claims that the mean waiting time in line is less than 3.5 minutes. A random sample of 20 customers has a mean of 3.7 minutes with a standard deviation of 0.8 minute. If α = 0.05, test the store's claim.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd