Why is it necessary to check that np ≥ 5 and nq ≥ 5?OA. It is necessary to check that nô≥ 5 and nq ≥ 5 because the confidence intervals estimating the populationproportions will overlap if these values are less than 5.OB. It is necessary to check that no 25 and nq 25 to be certain that the minimum value of the sample size, n, ismet.OC. It is necessary to check that no 25 and nq 25 because, if either of the values are less than 5, the distributionmay not be normally distributed, thus z cannot be used to calculate the confidence interval.OD. It is necessary to check that no 25 and nq 25 because, if either of the values are less than 5, the tails oneither side of the left and right endpoints are not accounted for.

Why is it necessary to check that np^ ≥ 5 and nq^≥5?

Answered: Why is it necessary to check that no 25…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

3. Michael wants to make a confidence interval estimate for the proportion of community members in favor of a tax increase for more local school funding. If he wants the margin of error to be no more than 0.025 at a 90% confidence level b) Suppose he guesses that about 30% are in favor for the tax increase. What will be the required sample size in this case? Assume the same margin of error and confidence level.
Suppose that Tom and Jerry determine confidence intervals using the same confidence level, based on the same sample proportion. Tom uses a larger sample size than Jerry. How will the midpoint and width of the confidence intervals compare? Same midpoint and same width Same midpoint, Tom has a wider interval Same midpoint, Jerry has a wider interval Same width, Tom has a larger midpoint Same width, Jerry has a larger midpoint Tom has a larger midpoint, wider interval Jerry has a larger midpoint, wider interval
If we want to find a range of values for which a possible population average would be, we would use O t-test O z-test confidence interval for u confidence interval for P
18. A credit card company claims that the mean time the customers spend on hold is 3.5 minutes. An employee of this company believes that customers spend more than 3.5 minutes on hold. A random sample of n = 36 calls is selected and the mean time the customers in this sample spent on hold was 5.15 minutes. All conditions for inference were met and the p-value for the appropriate hypothesis test was 0.031. Which of the following statements is the best interpretation of the p-value? (A) There is a 0.031 probability that the alternative hypothesis is true. (B) There is a 0.031 probability that the null hypothesis is true. (C) If the null hypothesis is true, there is a 0.031 probability of finding convincing evidence that 5.15 minutes is greater than 3.5 minutes. (D) If the null hypothesis is true, the probability of finding convincing evidence that the null hypothesis is true is 0.031. (E) If the null hypothesis is true, the probability of observing a sample mean of at least 5.15 minutes…
In an unpaired two-sample problem an experimenter observes n=14, x= 32.45, s× = 4.30, from %3D population A, and m=14, ỹ = 41.45, sy =5.23, from population B. Please set up the 99% confidence interval for difference of the population means. (-14.04, -3.96) (-14.02, -3.94) (-14.00, -3.92) (-13.98, -3.90) (-13.96, -3.92)
An analyst takes a random sample of 25 firms in the telecommunications industry and constructs a confidence interval for the mean return for the prior year. Holding all else constant, if he increased the sample size to 30 firms, how are the standard error of the mean and the width of the confidence interval affected?

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS