Five students visiting the student health center for a free dental examination during National Dental Hygiene Month were asked howmany months had passed since their last visit to a dentist. Their responses were as follows.6 16 10 20 27Assuming that these five students can be considered a random sample of all students participating in the free checkup program,construct a 95% confidence interval for the mean number of months elapsed since the last visit to a dentist for the population ofstudents participating in the program. (Give the answer to two decimal places.)

For the given sample observations of the number of months since the last visit to the dentist are as…

Answered: Five students visiting the student…

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

The bonus of the staff of the company is under the normal distribution. The bonuses ofthe 26 employees are randomly selected and the following data were received:∑ ? = 6448 ; ∑ ?2 = 1650000. Find a 90% confidence interval for the population mean
A sample of freshman takes a reading comprehension test and their scores are summarized below. Sample scores: 16, 8, 8, 6, 9, 11, 13, 9, 10 a. if the mean for the general population on this test is m=12, can you conclude that this sample is significantly different from the population. Test with a=.05 b. Calculate a 90% confidence interval around your mean.
A study of 420,098 cell phone users found that 0.0324% of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0335% for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a 95% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system Do not round until the final answer. Then round to three decimal places as needed.] R
The following data represents the monthly cost for telephone service for a random sample of 8 households in Wilmington. 43, 47, 51, 36, 50, 42, 38, 41, 39 Construct a 95% confidence interval for the population average monthly expenditure
The Salesforce company of a unicorn has various clients associated .The company wants to estimate the proportion of its clients who are associated with more than one company. A random sample of 600 clients is selected without replacement and 125 say that they are associated with more than one company .a. Construct a 99% confidence interval estimate of the population proportion of the clients who have been associated with more than one company
Forty seven subjects who were at least 20% overweight took nart in a group support program for 10 weeks. The weight of each subject was recorded at the beginning of the program and at the end of the program. A 95% confidence interval for the mean difference in weight loss (before - after) was found to be (12. 18) pounds. Could this information be used to conclude whether we would have rejected the null hypothesis that the program had no effect on average weight loss for people at least 20% over weight, using a significance level of 0.05? O No, there is no relationship between confidence intervals and hypothesis tests. O Yes, because 20% is not contained in the interval. O Yes, because the confidence interval does not include zero. O No, because the confidence interval does not include zero.
The following numbers represent five randomly selected individuals’ ages: 20, 32, 36, 42, 45. If the age distribution for the whole population follows a normal distribution, which one represents the 90% confidence interval for the mean age based on this particular sample? A ) (20.26, 49.74) B ) (25.66, 44.34) C ) (14.83, 55.17) D ) (28.28, 41.72) E ) (23.72, 46.28)
The dataset "nurses" is a random sample of 1,000 cases from “Health Care Provider Credential Data” from Washington State Open Data Portal. In the sample, there are 418 CNA's and 278 of the CNA's have expired credentials. Use the statistics from the nurses dataset to answer the following question: "With 90% confidence, what percent of all CNA's on Washington State's healthcare provider list are expired?"
Six students were given a memory recall test on an empty stomach, then again after eating a 500-calorie meal. Estimate the mean difference in memory recall scores between the two groups using 95% confidence. Empty Stomach 57 68 82 94 85 100 After Eating 68 75 91 90 85 100
In a study of success records of nine students, a researcher reported the following results: 12, 15, 10, 15,20,25,20,10,16. Construct a 99% confidence interval estimate of the true mean number of success. We will assume that the data is normally distributed. O a. (12.01, 19.75) O b. (10.25, 21.52) O . (12.75, 19.01) O d. (13.01, 18.75) e. (12.88, 18.88)

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