11.3 Calculate test statistic Question 2 of 6, Step 2 of 3:8:F1An economist studying inflation in electricity prices in 2018 and 2019 believes that the average price of electricity, even after adjusting for inflation, changed betweenthese two years. To test his claim, he samples 9 different counties and records the average price of electricity in each county from each year. He then adjusts the pricesfor inflation. His results are given in the following table. Test the economist's claim at the 0.10 level of significance assuming that the population distribution of the paireddifferences is approximately normal. Let d = (prices in 2019) - (prices in 2018).© 2023 Hawkes LearningF280F3000000F42018Average Residential Retail Prices of Electricity ($/kWh)11.6218.1916.6217.1315.4517.8618.2815.8115.113/20CorrectF5Conv DataF6eMacBook Air-tv◄◄F7201913.4416.3016.6216.3213.6116.9616.6414.0013.70ADIIF8ⒸF91F10Submit Answerzoom4)cricutF11F12

Answer Given,Sample1 Sample2 difference [d] 11.62 13.44…

Answered: An economist studying inflation in…

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 toasters produced by a company have a normally distributed life span with a mean of 5.8 years and a standard deviation of 0.9 years, what warranty should be provided so that the company is replacing at most 10% of their toasters sold?
Submit Angwer websign Studx f ASK YO 21-19 Points) DETAILS MY NOTES PODSTAT6 4.4.042.MI. The average playing time of music albums in a large collection is 32 minutes, and the standard deviation is 3 minutes. (a) What value is 1 standard deviation above the mean? I standard deviation below the mean? What values are 2 standard deviations away from the mea. 1 standard deviation above the mean 1 standard deviation below the mean 2 standard deviations above the mean 2 standard deviations below the mean (b) Without assuming anything about the distribution of times, at least what percentage of the times are between 26 and 38 minutes? (Round the answer to whole number) At least 96 (c) Without assuming anything about the distribution of times, what can be said about the percentage of times that are either less than 23 minutes or greater t 41 minutes? (Round the answer to the nearest whole number.) No more than (4) Assuming that the distribution of times is approximately normal, about what…
find and interpret the z-score for the darta value given/ the value 250 in a dataset with mean 208 amd standard deviation 21.
Determine the test statistic x2 and the pvalue
If batteries have lives that are normally distribute with mean 2, 800 hours and standard deviation 400 hours, using the 68-95-99.7 rule to approximate the percentage of batteries having a life less than 3, 600 hours.
The shelf life of a photographic film is of interest to the manufacturer, whoobserves the following shelf life for eight units chosen at random from the currentproduction. Assume that shelf life is normally distributed – 108, 134, 124, 116, 128, 163, 159, 134 days. Is there any evidence that the mean shelf life is greater than to 125 days.
9
The mean time taken to submit an assignment by a student was 20 days according to the previous semester record. The Exam office claimed that this year the submission time increased due to the natural calamities. Was thesubmission time really increased or not. Test the hypothesis with a 5% level of significance. The time taken by 15 students to submit their assignment are given below (14+a), (15+b),(16+c),(17+d),( 18+e) ,19, (20+a), (21+b),(22+c), (23+d),(24+e),(25+f), (26+a),(27+b), (28+c). values: a=1, b=9, c=1, d=9, e=4, f=6, g=3
4
A firm manufactures light bulb whose length of life follows a normal distribution with mean 90 hours and standard deviation of 2 hours. B.) What is the first decile life of the electric bulbs manufactured by this firm?

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