Describing level of significance

Assignment Help Basic Statistics
Reference no: EM13112850

1. When we say we have a confidence level of 95%, what do you think our "margin of error" is?

2. If we move the level of confidence from 95 to 99%, what will happen to our margin of error? What will happen to the width of our confidence interval?

3. Would we have gotten a better feel for the amount of flour needed if we'd used a larger sample? Why (mathematically) would this happen?

Reference no: EM13112850

Questions Cloud

Determine observational study or an experiment : Significant increase in the mortality of lung cancer in both genders, but no significant effect was observed at lower levels." Is this an observational study or an experiment? Fully explain your reasoning.
Real life hypothesis example : There used to be an ad on TV that claimed one toothpaste was proven to be more effective in fighting tooth decay than another. One of statistics professors was interested in the study, and after 6 ads finally got the address to write away for it f..
Determine the pressure in the tank : A fifty litres container of stainless steel was charged with 5.00 atm of H2(hydrogen gas) and 6.00 atm of O2(oxygen gas). A spark ignited this mixture (hydrogen gas & oxygen gas)
Illustrate what is the crash cost and is the total project : If the management want to crash the cost to the maximum, which activities should be crashed, illustrate what is the crash cost and illustrate what is the total project cost?
Describing level of significance : When we say we have a confidence level of 95%, what do you think our "margin of error" is? If we move the level of confidence from 95 to 99%, what will happen to our margin of error? What will happen to the width of our confidence interval?
Determine the expected value if person buys one ticket : In a raffle, 1,000 tickets are sold for $2 each. One ticket will be randomly selected and the winner will receive a laptop computer valued at $1200. What is the expected value if a person buys one ticket?
Evaluate gibbs free energy : You need to determine value of ?G° for CO(NH2)2(s) + H2O(l) CO2(g) + 2NH3(g)?
Illustrate what are three ways it has helped the hospitality : Explain how can an industry measure its success of applying the co alignment principle? Illustrate what are three ways IT has helped the hospitality industry?
Description of hypothesis testing questions : The management of White Industries is considering a new method of assembling its golf cart. The present method requires 42.3 minutes, on the average, to assemble a cart.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Point estimation of the mean

What is the point estimate of the mean planned expenditure by all Americans taking long summer vacations in 2002?

  Differences between hypotheses testing methods

Can you describe in detail the differences in ANOVA and the five-step hypothesis testing method?

  Forecast-three periods average process

Which component of a time series is most likely to occur? Which component has a pattern that must be complete in a single year and repeat from year to year?

  Validate whether the z test assumption

Conclude whether the given conditions justify using the methods of this section when testing a claim about a population mean µ.

  Testing of hypothesis

Find the sample proportions and test statistic for equal proportions. Is the decision close? Find the p-value.

  Probability calculation by using z score

A salesperson goes door-to-door in a residential area to demonstrate the use of a new household appliance to potential customers. She has found from her years of experience that after demonstration, the probability of purchase (long run average) i..

  Write values of mean-standard deviation for original sample

Mean and standard deviation for new sample were then computed to be M _ 6 and s _ 3. Write down the values of mean and standard deviation for original sample?

  Determining probability of marks on statistics midterm

Marks on statistics midterm test are normally distributed with mean of 78 and a standard deviation of 6. Determine the probability that class of 50 has average midterm mark that is less than 75?

  Determine the registered voters that will really vote

Pollsters attempt to find out whether or not person is a "likely voter" before they count their opinion in poll. If we suppose 40% of registered voters will really vote.

  Six sigma computation-interpretations

To what probabilities do each of the following sigma levels correspond to, based on a standard normal curve: 3 sigma, 4sigma, 5 sigma, and 6 sigma? (Hint: Use the NORMSDIST function in Excel.

  What percentage of light bulbs

If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, what percentage of light bulbs have a life less than 2500 hours?

  Selling the same standardized product

In which of the following markets do all firms sell the same standardized product?

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