A survey looked at how long it takes a typical company to recoup an investment in research. The survey determined that 39% of the corporations took six months or less to recoup their investment. Thedata table below shows a sample of the time, in months, it might have taken 20 corporations to recoup their investment. Complete parts a and b.9.08.04.04.07.08.07.07.09.55.57.512.08.55.510.510.07.54.57.07.5a. Determine the number of corporations that recovered their investement in research in six months or less.There were 5 corporations that recovered their investment in research in six months or less.b. Calculate the probability of obtaining at most the number of corporations that you determined in part a if the percent of those recovering their investment is as indicated by the survey.The probability(Round to four decimal places as needed.)

Given data values are , 9.0, 4.0 , 7.0 , 7.0 , 9.5 , 7.5 , 8.5 , 10.5 , 7.5 , 7.0 , 8.0 , 4.0 , 8.0…

Answered: A survey looked at how long it takes 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

Several years ago, two companies merged. One of the concerns after the merger was the increasing burden of retirement expenditures. An effort was made to encourage employees to participate in the 401(k) accounts. Nationwide, 62% of eligible workers participated in these accounts. The accompanying data table contains responses of 30 employees of the company when asked if they were currently participating in a 401(k) account. Complete parts a through d. Click the icon to view the data table. a. Determine the sample proportion of company workers who participate in 401(k) accounts. The sample proportion is (Round to three decimal places as needed.) b. Determine the sampling error if in reality the company workers have the same proportion of participants in 401(k) accounts as does the rest of the nation. The error is. (Round to three decimal places as needed.) c. Determine the probability that a sample proportion at least as large as that obtained in the sample would be obtained if the…
We would like to use the weight of a car to predict its fuel economy. Weights (in 1000s of pounds) and fuel efficiency (in miles per gallon) are shown in the table below for a sample of ten car models: Weight Fuel Efficiency 25 3.1 3.7 2.2 3.4 2.0 3.9 3.0 2.5 3.6 2.7 21 31 22 35 16 24 27 17 29 It can be shown that i = 3.01, s, = 0.65, ỹ = 24.70, s, = 6.02, (r; – 1)? = 3.8025 and ( – ý)? = 24.92. i=1 The equation of the least-squares regression line is calculated to be ŷ = 51.47 – 8.89r. (a) Write out the simple linear regression model and define all terms. (b) The residual plot is shown below: 2- -3- 25 3.5 Weight What does the residual plot tell you about the validity of the regression model in (a)? (c) Construct a 95% confidence interval for the parameter ßị in the simple linear re- gression model. (d) Provide an interpretation of the confidence interval in (c). (e) Conduct a test of Ho: B1 = 0 vs. Ha: B1 + 0 at the 5% level of significance to determine whether there exists a linear…
The population of a certain region grew from 17 million in 2005 to 21.7 million in 2012 a. Find a function of the form P(t) = Ce that models the population growth of the region. Here, t is the number of years since 2005, and P(t) is in millions. Round your k value to 3 decimal places.
letter d & e
Joan's Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a particular landscaping proposal is based on the number of plantings of trees, shrubs, and so on to be used for the project. For cost estimating purposes, managers use two hours of labor time for the planting of a medium-sized tree. Actual times from a sample of 10 plantings during the past month follow (times in 2 hours). 3.2 1.5 1.7 2.5 3.0 2.5 2.3 1.8 3.7 2.7 With a 0.05 level of significance, test to see whether the mean tree-planting time differs from two b. Compute the sample mean. (to 2 decimals) c. Compute the sample standard deviation. (to 4 decimals) d. Find the test statistic and p -value. (to 3 decimals) p-value: here is the choices lower than 0.01 between 0.01 and 0.025 between 0.05 and 0.0250 between 0.05 and 0.10 between 0.10 and 0.20 greater than 0.20 e. What is your conclusion? We do or do not reject the null…
A psychologist at a private mental health facility was asked to determine whether there was a clear difference in the length of stay for patients with different categories of diagnosis. Looking at the last seven patients in each of the three major categories, the results (in terms of weeks of stay) were as follows. Using the data below, test whether the length of stay for patients vary based on category of diagnosis. Diagnosis Category Affective Disorders Cognitive Disorders Drug-related Conditions 7 12 8 6 8 10 5 9 12 6 11 10 9 11 9 5 10 11 6 9 12 The above scenario requires a one-way Anova, with a bar graph. Question - I need to write an explanation for the output given. I am to include a statistical notation and explanation as to whether the results are significant or not significant. Examples of Explanation: Non-significant:A One-Way ANOVA was conducted to examine whether a preceding situation (watching a…
A study was done to look at the relationship between number of lovers college students have had in their lifetimes and their GPAs. The results of the survey are shown below. Lovers 4 8 3 7 0 6 5 6 GPA 2.7 2.3 3.4 2.4 3.5 2.9 2.7 2.8 r2r2 = (Round to two decimal places) Interpret r2r2 : There is a large variation in students' GPAs, but if you only look at students who have had a fixed number of lovers, this variation on average is reduced by 80%. Given any group of students who have all had the same number of lovers, 80% of all of these studetns will have the predicted GPA. 80% of all students will have the average GPA. There is a 80% chance that the regression line will be a good predictor for GPA based on the number of lovers a student has had. The equation of the linear regression line is: ˆyy^ = + xx (Please show your answers to two decimal places) Use the model to predict the GPA of a college student who as had 7 lovers.GPA = (Please round your…
A city official would like to know if there is public support for increasing funding for arts programs. To collect data, the city official stands outside a concert hall after a show and surveys every 25th person to exit and asks their opinion about raising funds for the arts. Which of the following describes the population in this scenario? all residents of the city the members of the city council all city residents who support the arts the people surveyed by the city official
A social researcher wishes to know if there is a relationship between gender and perspective on the death penalty. Data has been collected on 228 persons and the results are displayed in the table below. Is there evidence of a relationship between gender and perspective on the death penalty? Gender Favor Oppose Total Male 70 42 112 Female 68 48 116 Total 138 90 228 Copy Data Step 4 of 8 : Find the value of the test statistic. Round your answer to three decimal places.
Please see below.
Hours Spent in Child Care 5.5 11.4 2.1 11.0 7.2 5.1 9.1 10.2 2.9 8.7 10.0 9.0 9.8 9.4 3.1 8.5 9.6 10.6 7.6 8.9 10.7 6.0 0.6 3.7 9.8 3.3 3.5 5.0 3.3 10.3 7.3 6.9 6.1 4.3 0.8 6.9 8.1 1.3 1.6 9.8 Sample Size 40 Hypothesized Mean 6
Please help me answer these and understand

SEE MORE QUESTIONS

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