Samples of two types of electric light bulbs were tested for the lengthof life and following data were obtainedType I8Type II7Sample sizeSample meanSample Standard123410363640DevIs the difference in the means sufficient to warrant that type Isuperior to type II regarding length of life.a. 3.99: reject the null hypothesisb. 9.33: reject the null hypothesisc. 9.39: reject the null hypothesisd. 3.90: reject the null hypothesise. NONE OF THE ABOVE

Given, For Type I : sample size (n1) = 8 sample mean (x̄1) = 1234 sample standard deviation (s1) =…

Answered: Samples of two types of life and…

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

Linear regression activity. Tune current between one and six years old were randomly selected from the classified ads of the Arizona republic.The following data were obtained where X donates age in years,and y donates price,in hundreds of dollars. x (age) 6,6,6,2,2,5,4,5,1,4 price(100ths) 270,260,275,405,364,295,335,308,405,305 Draw a scatter diagram. Find the linear correlation coefficientr. describe the shape strength and direction.does a linear relationship exist between the age of Corvette and its price (use the critical value to explain).If appropriate explain the slope in contexts. If appropriate explain the Y intercept in context.Predict the price of a one year old Corvette.Find the residual of a one year old Corvette.
Topic CORRELATION OF TWO VARIABLES Look at the data and Find the value of r in three ways/formulations scatter chart & coefficient correlation and with formulation X Y X Y X Y 22 18 19 25 11 17 15 16 7 36 5 6 9 31 6 27 26 45 7 8 46 45 19 30 4 2 11 18 8 18 45 36 27 18 1 3 19 12 19 37 9 7 26 16 36 42 18 28 35 47 25 20 46 21 49 22 16 12 9 25
Question 19 Linear Regression Application, Interpolation and Extrapolation Use the data and story to answer the following questions The table below shows the number of state-registered automatic weapons and the murder rate for several Northwestern states. > I Y 11.8 8.5 6.6 3.6 2.4 2.7 2.3 0.4 11.1 9.8 7.2 5.9 6.6 6.1 4.5 14 z = thousands of automatic weapons y = murders per 100,000 residents Use your calculator to determine the equation of the regression line. (Round to 2 decimal places) Determine the regression equation in y = ax + b form and write it below. Answer= A) How many murders per 100,000 residents can be expected in a state with 9.7 thousand automatic weapons? Answer= Round to 3 decimal places. B) How many murders per 100,000 residents can be expected in a state with 8.1 thousand automatic weapons? Round to 3 decimal places.
Answer number 2 using the data on the second picture.
Detailed solution thank you.
#2 of 25- Jabari 2 The number of houses on a street were counted. The data is represented in this histogram. Number of Houses on Streets Number of Streets 20 18 16 14 12 10 0-5 6-10 11-15 16-20 21-25 Number of Houses on Street How many streets had no more than 10 houses on them? A 16 B 25 C 55 D 12 0 Save and Return 100%
The number of years that a couple has been happily married is an example of A nominal level data B ordinal level data C interval ratio level data D ordinary level data If the scores of an even number of cases are arranged from high to low, the median is A the middle score B the average of the two middle scores C the average of the highest and lowest scores D the same as the mode
Q3.1 Cholesterol Before and After Treatment A random sample of 16 people with high cholesterol were given a new drug designed to lower cholesterol levels. The table contains the cholesterol levels (in milligrams per deciliter) measured before and after treatment for each person. Person 1 2 3 4 Before 237 248 260 266 After 176 178 191 192 Person 9 10 11 14 15 16 Before 283 284 286 289 292 293 295 299 After 215 212 204 214 214 192 216 206 Save Answer Do these data support the claim that the average reduction in cholesterol for people on this medication would be greater than 70 mm/dL? Q3.2 Conditions Hypotheses: Write the appropriate hypotheses, including defining the parameters and identifying the subscripts appropriately. (Note: you are not required to use Greek letters. For example, writing sigma is sufficient for σ.) Save Answer 5 6 7 273 274 275 277 195 187 212 196 12 Q3.3 Mechanics Conditions: Use your own paper to explain how the Normal condition for this test has been met. Then…
d. Construct a 95% confidence interval estimate of the difference in the mean prices between the two stores. The 95% confidence interval estimate is
C Safari File Edit View History Bookmarks Develop Window Help 0 ●●● Module 1 Video Lecture: Types of Data &... esc V 7 Age 40-44 7 45-49 11 50-54 19 55-59 14 60-64 10 65-69 2 70-74 1 (a) What is the frequency for CEO ages between (but not including) 54 and 65? (Enter your answer as a whole number.) (b) What percentage of CEOs are 65 years or older? (Round your answer to the nearest whole number.) % Free Introductory to Statistics Textbook... (c) What is the relative frequency of ages under 50? (Round your answer to two decimal places.) (e) Which graph shows the relative frequency? Relative Frequency 1.0 Q A magazine published data on the best small firms in a certain year. These were firms which had been publicly traded for at least a year, have a stock price of at least $5 per sh annual revenue between $5 million and $1 billion. The table below shows the ages of the chief executive officers for the first 64 ranked firms. Frequency Relative Frequency 0.8 (d) What is the cumulative…

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

Samples of two types of life and following da