Creating confidence interval for mean by standard deviation

Reference no: EM1315419

Q1) The antique collector thinks that price received for particular item increases with its age and with number of bidders.

Formulate and evaluate the multiple regression models by using given data. Interpret each of evaluated regression coefficients. Is antique collector correct in believing that price received for item increases with its age and with number of bidders?

Q2) A chemical plant which produces bleach claims the average daily yield of 880 tons per day. It is sensible to suppose production levels are normally distributed-some days are slightly higher than others, some are lower. A random sample of 36 days yielded the average daily output of 890.2 tons, with standard deviation of 19.8 tons. Use this information to make a 95% confidence interval for mean.

Reference no: EM1315419

Questions Cloud

Three countries would be the best choic : Conclude which of these three countries would be the best choice also support your answer.

Conducting the forensic investigation : Describe the purpose of several initial reviews being conducted by forensics investigator (e.g., time lines, technical skills, procedures).

Computing profits and output : A farm operator has asked you to help him/her determine the quantity of water that should be applied to a crop under irrigation.

Estimating amount of labor involved in inventory stockrooms : What would you recommend Taylor do to cut back its labor cost? (Illustrate using an ABC plan.)

Creating confidence interval for mean by standard deviation : A random sample of 36 days yielded the average daily output of 890.2 tons, with standard deviation of 19.8 tons. Use this information to make a 95% confidence interval for mean.

Computing expected return and standard deviation portfolio : Computing expected return and standard deviation of portfolio and What are the weights for investing in the risk-free asset and the S&P that produce a standard deviation for the entire portfolio that is twice the standard deviation of the S&P

Using law of cosines for solving the problem : Using law of cosines for solving the problem.

Elucidate the long-run which will take place this industry : Utilize these new diagrams to Elucidate the long-run which will take place in this industry.

Advertising in oligopoly market : Using the theory of oligopoly and the concept of prisoners dilemma, explain why the cigarette companies did not cut on advertising on their own to increase their profits before the law went into effect?

User Account

All Pages