User Account

All Pages

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

  Comparing bmi of miss america winners

Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Use the p-value method for testing hypotheses.

  Is the mean of the sample larger population of fish

A certain pond to check if they are significantly larger than the mean stated above. Is the mean of the sample larger population of this fish? use either L=1% or L=5%.

  Determine the mean-median and mode of data

Determine the mean, median and mode of those data. Make sure you show your hand computeed work. Is there any indication from this group of data that the new policy holder may lean toward younger ages?

  What is the likelihood of the given occurrence

The local newspaper, the Corry Press, suggests discrimination in an editorial. What is the likelihood of this occurrence?

  An index of two store items for 2007 based on 2004 is to be

an index of two store items for 2007 based on 2004 is to be constructed. the information for the prices and quantities

  Testing the significance of the regression model

The ANOVA summary table below is the result of a regression of sales on year of sales. Is the relationship statistically significant at .05? Comment.

  Sample data comes from a population

To be from the same population? You may assume the that follows a normal distribution. values are: 2.13 1.31 1.91 1.92 1.77 1.64 2.29 1.99 2.33 2.49 2.22

  Compare a new drug to a standard drug

Article summarizing a study to compare a new drug to a standard drug and to a placebo - baseline characteristics are significantly different (at the 0.05 level of significance) between treatment groups

  If other factors remain constant the larger the sample is

if other factors remain constant the larger the sample is the more likely you are to obtain a significant value for the

  Compute measures of central tenancy and a dispersion

The price in dollars of a gallon of gasoline at the end of each month is recorded for one year.

  Point estimation of the mean

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

  Probability that both televisions work

Suppose you just received a shipment of eight televisions. Two of the televisions are defective. If two televisions are randomly selected, compute the probability that both televisions work. What is the probability at least one does not work?

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd