How are confidence intervals calculated

Assignment Help Basic Statistics
Reference no: EM131008566

A 95% confidence interval is not so much a statement about any particular interval, such as (79.3, 80.7), but pertains to what would happen if a very large number of like intervals were to be constructed. That is, from a practical point of view, the 95% gives the fraction of the time, in repeated sampling, that the intervals constructed will contain the target parameter µ. How are confidence intervals calculated?

Reference no: EM131008566

Questions Cloud

Problem regarding the house sales : The realty company in Exercise 21b looks at a recent sample of houses that have sold. On testing the null hypothesis that 50% of the houses take more than three months to sell against the hypothesis that more than 50% of the houses take more than ..
Pyramid construction company has used the completed contract : Prepare the 2011-2010 comparative statements of shareholders' equity. (Hint: The 2009 statements reported retained earnings of $36,000. This is $60,000 - [$60,000 × 40%].
What is the value of the correlation coef?cient : Predict the volume of cerebral grey matter at age 2 to 5 years for a child whose head circumference z score at age 12 months was 1.8. Explain why it would not be a good idea to use the least-squares line to predict the volume of grey mat- ter..
Correct percentage of on-time deliveries : There's a 22% chance that the sample they drew shows the correct percentage of on-time deliveries There's a 22% chance that natural sampling variation could produce a sample with an observed proportion of on-time deliveries such as the one they obt..
How are confidence intervals calculated : A 95% confidence interval is not so much a statement about any particular interval, such as (79.3, 80.7), but pertains to what would happen if a very large number of like intervals were to be constructed. How are confidence intervals calculated
Prepare the journal entry to record the change in accounting : Assume that Weihrich used FIFO before 2011, and then in 2011 decided to switch to average cost. Prepare the journal entry to record the change in accounting principle and briefly describe any other steps Weihrich should take to appropriately report t..
Proportion of houses : A realty company recently announced that the proportion of houses taking more than three months to sell is now greater than 50%. A financial firm's accounting reports that after improvements in their system, they now have an error rate below 2%.
Reject the null hypothesis : For each of the following situations, state  whether a Type I, a Type II, or neither error has been made. a) A test of H0: m = 25 vs. HA: m 7 25 rejects the null hypothesis. Later it is discovered that m = 24.9. b) A test of H0: p = 0.8 vs. HA: p 6 0..
Solve the constant-coefficient equation : Solve the constant-coefficient equation in u to find two linearly independent solution. Use part (b) to find solution of the DE when a = 1 and b = -1/2. FInd the solution when y(1) = 0 and y'(1) = 1.

Reviews

Write a Review

Basic Statistics Questions & Answers

  1a national poll of 600 men announced that the proportion

1.a national poll of 600 men announced that the proportion in the survey who claimed to help their wives at home was

  Assuming that the food costs are normally distributed what

the mean amount spent by a family of four on food per month is 500 with a standard deviation of 75. assuming that the

  Let xsub1 and xsub2 constitute a random sample from a

let xsub1 and xsub2 constitute a random sample from a normal population with variance 1. if the null hypothesismumusub0

  Refer to the applied ecology and environmental research vol

refer to the applied ecology and environmental research vol. 12003 study of beech trees damaged by fungi exercise 4.61

  Let x be a discrete random variable that is uniform over

let x be a discrete random variable that is uniform over the set of integers in the range ab where a and b are given

  Write a null and alternative hypothesis statement

Is there significance evidence that a difference exists between the actual males and female responses in this sample and the expected male/female responses in the population - What is your null hypothesis and what is your alternative hypothesis?

  Probability-mean breaking strength untreated specimens

A clothing manufacturer tests an SRS of 3 specimens of each fabric. (a) What is the probability that the mean breaking strength of the 3 untreated specimens exceeds 49 pounds.

  The distribution of annual salaries for 52 employees in a

the distribution of annual salaries for 52 employees in a small manufacturing company has the following averages the

  Find the probability that troy loses 2 matches before they

greta and troy are playing chess. greta is a poor sport and will stop playing as soon as she loses 3 chess matches.

  Why reading-writing and language are an important

Write a 500-words essay explaining why reading, writing and language are an important part of his life inside and outside the classroom. Student should share examples of how they answer the call to service at Union Catholic High School, home or in..

  Describe at least six statistical measures

Which sorts of summary statistical methods would you include in the updated workbook? Describe at least six statistical measures that you would use so that you could explain them to your supervisor.

  Separation constant lead to non-trivial solutions

Suppose the boundary conditions are that u(x,y) vanishes on the lines x=0 ,x=3, y=0, and y=2. Derive the corresponding boundary conditions for f and g. Given k^2, show that only certain values of the separation constant lead to non-trivial solution..

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