Construct a confidence interval if prices is skewed left

Assignment Help Basic Statistics

Reference no: EM13159691

A random sample of 15 statistics textbooks has a mean price of $105 with a standard deviation of $30.25. Determine whether a normal distribution or a t-distribution should be used or whether neither of these can be used to construct a confidence interval. Assume the distribution of prices is skewed left.

Reference no: EM13159691

Questions Cloud

Calculate the ph of a solution : Calculate the pH of a solution prepared by mixing 20.0 mL of 0.01 M HCl with 100.0 mL of 0.10 M HCN. For HCN, Ka = 1.0 x 10- 10. Assume that the volumes are additive.

Devise a hypothetical business situation : Devise a hypothetical business situation in which buying a lookback call option on a commodity may be a sound strategy for you. How about a down-and-out call option?

What is the average packing ratio of dna at metaphase : The broad bean is diploid and 2n= 18. Each haploid chromosome setcontains approximately 4 m of DNA. the average size of eachchromosome during metaphase of mitosis is 13 µm. What is the average packing ratio of DNA at metaphase? How is this packing..

Structure and goals of the epa : Briefly outline the structure and goals of the EPA, and illustrate how this agency impacts an important environmental regulatory aspect of your workplace.

Construct a confidence interval if prices is skewed left : Normal distribution or a t-distribution should be used or whether neither of these can be used to construct a confidence interval. Assume the distribution of prices is skewed left.

Not-for-profit and governmental entities : Write a Memo to a nonfinancial audience explaining how increasing scrutiny and demand for accountability by the public has influenced reporting for not-for-profit and governmental entities.

How many liters of hydrogen are obtained : how many liters of hydrogen are obtained from the reaction of 4 g calcium with excess water, at 37 Celsius and 0.962 atm?

Item number in the inventory : Write a console program that will ask the user for an item number in the inventory and display the name of that item. Stay in a loop so that the user may enter the item number multiple times. Use the letter E to exit the application. Show an error me..

Difference between crime and deviance : What is crime? What is the difference between crime and deviance? How might the notion of crime change over time? What impact does the changing nature of crime have on criminology?

User Account

All Pages