Create confidence interval for proportion of population

Assignment Help Basic Statistics
Reference no: EM13121620

A survey of customer service in retail stores has been made. The survey found that 182 of Americans feel customer service is better today than it was two years ago. If 650 adults were included in the sample, develop a 95% confidence interval for the proportion of the population of adults who feel customer service is better today than it was 2 years ago.

Reference no: EM13121620

Questions Cloud

How could a translocation generate genetic changes : In patients with chronic myelogenous leukemia, an odd chromosome is seen in all the cancerous cells. A small piece of chromosome 9 is connected to chromosome 22. This 9:22 translocation is called the Philadelphia chromosome. How could a translocat..
What is the correct alternative hypotheses to test : Should the company adopt the new tread pattern? What is the correct alternative hypotheses to test whether this is strong evidence that they have failed to attain their goal.
How could you transform a plant : Knowing that a plant will grow from a single cell in tissue culture, how could you transform a plant so that it glows in the dark?
Estimate revenues earned on basis costs incurred an estimate : selzer estimates the total cost of servicing the warranties will be $120,000 for 2 years. Estimate revenues earned on basis of costs incurred an estimated costs.
Create confidence interval for proportion of population : Develop a 95% confidence interval for the proportion of the population of adults who feel customer service is better today than it was 2 years ago.
Tax basis in partnership interest : Steve and Jim formed a partnership on January 1 with cash contributions of $600,000 and $400,000, respectively. The partners agree to share profits and losses equally. The partnership immediately borrowed $200,000. What is Jim's tax basis in his p..
What is the final temperature : If all the energy obtained by by burning 1.26 lb of butane (fuel value is 10.85 kcal/g) is used to heat 126.0 kg of water at an initial temp of 19.7C, what is the final temperature.
Explain how much qpai and wages are allocated to janet : Janet has a 40% interest in the S corporation. All expenses that reduce DPGR are from wages, and all wages paid relate to DPGR. Explain how much QPAI and wages are allocated to Janet?
Probability time-cnn poll provide a sample proportion : What is the probability the Time/CNN poll will provide a sample proportion within plus-or-minus 0.02 of the population proportion?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Asset allocation of the portfolio

The following table describes the asset allocation of your portfolio with the corresponding return in percentage, X, and the proportion of that specific asset in the portfolio, P(X).

  Percentile value for a standardized test

As you know, the percentile for a value is a measure of where that value stands with respect to the rest of the data. As a criterion for college admissions, why would many schools use a percentile value for a standardized test, rather than a raw s..

  Determining standard error of estimate

Determine the coefficient of determination R 2 . Determine standard error of the estimate s e .

  Strong positive and strong negative correlation

What is the difference between strong positive and strong negative correlation? Is there value in a strong negative correlation? If so, what? In your answer provide examples from your life.

  Rtio level of measurement

Classify the following as an example of nominal, ordinal, interval, or ratio level of measurement, and state why it represents this level: rankings of the top ten best-selling authors

  Performing a one-tailed test

An automobile assembly line operation has a scheduled mean completion time, mean, of 14.7 minutes. The standard deviation of completion times is 1.2 minutes.

  Significance level and power of a test

The significance level of a statistical test is equal to the probability that the null hypothesis is true.

  What is the p-value for a test of the hypotheses

How large should n be so that a 90% confidence interval for µ has a margin of error and What is the P-value for a test of the hypotheses

  Normal serum hemocrit

The normal serum hemocrit level is 0.41 milligrams to 100 milligrams of blood. The level in elderly patients is significantly low at 0.31.

  Find correlation coefficient between the two variable

(12,50), (6, 36), (20,60), (5,24), (38,70), (3,24), (8, 42), (20,65), (10, 40), (15, 60). Your best guess of the correlation coefficient between the two variables is?

  Creating a prediction model

You wish to find out if negative relationship exists between amount of bottled water someone drinks and their water bill.  Create a prediction model, if suitable.

  Null hypothesis-two tailed test

A manufacturer claims that the mean lifetime, mu, of its light bulbs is 44 months. The standard deviation of these lifetimes is 7 months. Seventy bulbs are selected at random, and their mean lifetime is found to be 43 months.

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