Why are samples studied when we want to know about, Ask an Expert

Statistics

Why are samples studied when we want to know about populations? Why are random samples used instead of just any sample? How would you determine an appropriate sample size? What is the importance of applying confidence intervals when solving business problems? What is the impact of sample size on this parameter? Please provide references.

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9375145

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

A stocks price fluctuations are approximately normally

A stock's price fluctuations are approximately normally distributed with a mean of $104.50 and a standard deviation of $23.62. You decide to purchase whenever the price reaches its lowest 20% of values. What is the most ...

A researcher is interested in learning more about the

A researcher is interested in learning more about the protective effects of exercise. He conducts a study where he collects information about stress levels (measured on a multi-item Likert scale) and hours of exercise co ...

In a random sample ofnbsp50nbsprefrigerators the mean

In a random sample of 50 ?refrigerators, the mean repair cost was ?$146.00 and the population standard deviation is ?$17.80. Construct a 90?% confidence interval for the population mean repair cost. Interpret the results ...

Question - the data in the table below is from a study

Question - The data in the table below is from a study conducted by an insurance company to determine the effect of changing the process by which insurance claims are approved. The goal was to improve policyholder satisf ...

A new type of soft drink from frackly inc is sold in 500

A new type of soft drink from Frackly Inc. is sold in 500 milliliter (ml) bottles. The mean volume of drink placed in a bottle is 490 ml with a standard deviation of 6.1 ml. Assuming a normal distribution of the data, wh ...

A random sample ofnbsp86nbspeighth grade students scores on

A random sample of 86 eighth grade? students' scores on a national mathematics assessment test has a mean score of 292. This test result prompts a state school administrator to declare that the mean score for the? state' ...

Stock valuation gruber corp pays a constant 9 dividend on

Stock Valuation Gruber Corp. pays a constant $9 dividend on its stock. The company will maintain this dividend for the next 12 years and will then cease paying dividends forever. If the required return on this stock is 1 ...

You work for a large company with tens of thousands of

You work for a large company with tens of thousands of retail outlets throughout the world. The average sales at each retail outlet is $2,400,000 per year, with a standard deviation of $600,000. You want to put in place ...

Which level of risk considers sources of danger or

Which level of risk considers sources of danger or uncertainties that have a direct and model-wide impact?

Suppose you sell a fixed asset for 121000 when its book

Suppose you sell a fixed asset for $121,000 when it's book value is $147,000. If your company's marginal tax rate is 35%, what will be the effect on cash flows of this sale (i.e., what will be the after-tax cash flow of ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert