A local university administers a comprehensive examination to the candidates for B.S. degrees in BusinessAdministration. Five examinations are selected at random and scored. The scores are shown below. Develop a 95%confidence interval estimate for the mean of the population. Assume the population is normally distributed.Grades8090916277Select one:O a. 65.39 - 94.61O b. 68.78 - 91.22О с.O d. 67.52 - 92.4869.48 - 90.52

The data shows the five examinations scores.

Answered: A local university administers a…

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

Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.
College tuition: A simple random sample of 40 colleges and universities in New York State has a mean tuition of $30,503 with a standard deviation of $6,372. Construct an 80% confidence interval for the mean tuition for all colleges and universities in New York State. An 80% confidence interval for the mean tuition for all colleges and universities is
You measure 25 randomly selected textbooks' weights, and find they have a mean weight of 73 ounces. Assume the population standard deviation is 5.8 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight.
In order to estimate the average amount a customer spends on a meal in a major restaurant, data was collected from a sample of 30 customers. Suppose the population standard deviation is $3 . If the sample mean is $22, what is the 95% confidence interval for the population mean? Select one: a. [20.93 , 23.07] b. [20.59 , 23.41] c. [21.99 , 22.01] d. [20.95 , 23.05]
In order to determine if weather conditions play a significant role in how a disease effects wheat, fields of wheat are exposed to this disease over three consecutive summers, 2002-2004. The fields are later rated on a scale of 0.0 (resistant) to 10.0 (susceptible) based on how the disease has infected the field. The results are shown below along with the ANOVA table. At the 95% confidence level, compare the mean scores across the three years. 2002 2003 2004 7 7.3 5 4.7 8 3 8 5 2 3.3 3.3 7 6.3 4.7 7.3 7 3.7 8 7 4.3 6. 7 4.3 2 6.3 6.7 ANOVA Source of Variation df MS Treatment 20.97333 2 10.48667 4.127165 Error 76.22667 30 2.540889 Total 97.2 32
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)
Listed below are the amounts of net worth (in millions of dollars) of the ten wealthiest celebrities in a country. Construct a 95% confidence interval. What does the result tell us about the population of all celebrities? Do the data appear to be from a normally distributed population as required? 245 210 186 168 166 163 156 156 156 156
The customer service ratings for two banks are found below. As manager decide which bank your company should select using a 90% confidence level. Conduct a test to determine whether there is a significant difference between the variances of the two banks' rating. Current New Bank 89.9 80.4 82.2 98.7 75.1 83.1 41.7 99.8 84.3 86.2 98.6 97.1 75.4 87.9 80.6 78.5 76.4 69.9 81.4 98.5 59.7 82.9 98.4 49.5 83.4 54.6 76.2 90.1 1. Provide the null hypothesis:. a. Ho: o?, s o2, b. Họ: o?, 2 o?2 c. Ho: o?, = o?2 d. Ho: o?, * o?2 2. Compute the test statistic (Round to the second decimal place) 3. Determine the p-value (Round to the third decimal place) 4. What do you conclude 5. What would you recommend
The number of unhealthy days based on the AQI (air quality index) for a random sample of metropolitan areas is shown. Construct an 80% confidence interval based on the data. Assume the variable is normally distributed. 23, 21, 14, 5, 40, 61, 39, 1, 0, 16
E Question Help 5.4.19-T The heights of fully grown trees of a specific species are normally distributed, with a mean of 74.0 feet and a standard deviation of 6.50 feet. Random samples of size 14 are drawn from the population. Use the central limit theorem to find the mean and standard error of the sampling distribution. Then sketch a graph of the sampling distribution. The mean of the sampling distribution is The standard error of the sampling distribution is o, =| (Round to two decimal places as needed.) More Enter your answer in the edit fields and then click Check Answer. 1 part remaining Clear All Check Answer hp

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