book/QNT 375T_55007971/chapter/5/section/3375T: Business Data Analytics home >tervals for population proportionsE zyBooks catalogJump to level 1Understanding student demographics is important for a college in deciding what programs will mostbenefit students. A sample of students is taken to determine what proportion of students identify asHispanic or Latino. The results of the sample are shown. below.Student sampleHispanic/Latino (x)Sample size (n)63350Confidence Level90%Critical Value1.645Margin of Error0.034What is the population parameter?PickWhat is the point estimate for the population proportion? p = Ex: 0.99The data suggests a Pick vconfidence exists that the proportion of students who identify as Hispanicor Latino is between | Ex: 0.123CheckTry againWpausebreakF8F9F10F11F12F4F6F7

Given: A sample of students is taken to determine what proportion of students identify as Hispanic…

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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An analysis was conducted by the Statistics Consulting Center atVirginia Polytechnic Institute and State University in which acertain treatment was applied to a set of tree stumps. The chemicalGarlon was used the with the purpose of regenerating the roots ofthe stumps. A spray was used with four levels of GarlonPage 23 of 23concentration. After a period of time the height of the shoots wasobserved. Does the concentration of Garlon has a significantimpact on the height of the shoots? Use α = 0.05.
To determine how climate change and habitat loss will influence Antarctic species, baseline estimates of population sizes and distributions are needed. To this end, a group of researchers estimated the population sizes of all breeding colonies of emperor penguins (Aptenodytes fosteri) along Antarctic coastlines using satellite imagery (Fretwell et al., 2012). For each breeding colony encountered, the researchers determined the latitude, longitude, and area (m2) of the colony, and estimated the total number of emperor penguins present. Then, they compared their colony size estimates to previously published estimates. Suppose the researchers want to determine if there is a linear relationship between the previous population estimates and the current population estimates, so they decide to conduct a two-tailed T test for no linear relationship. From 29 data points, they calculate the linear regression equation to be Y^ =925.25556+0.71001x where ?Y^ is the predicted current population…
When a process tolerance is larger (has wider spread) than the product specification limits, the process will: Select one: a. Need to be controlled statistically b. Be under control c. Produce defects causing costly scrap and rework d. Produce few defects
Lecture(10.3a): Identify the test statistic used for the ANOVA procedure and how it is calculated. (a) The test statistic is F and is calculated by finding the difference between groups.
Most major airlines allow passengers to carry two pieces of luggage (of a certain maximum size) onto the plane. However, their studies show that the more carry-on baggage passengers have, the longer it takes to unload and load passengers. One regional airline is considering changing its policy to allow only one carry-on per passenger. Before doing so, it decided to collect some data. Specifically, a random sample of 1,000 passengers was selected. The passengers were observed, and the number of bags carried on the plane was noted. Out of the 1,000 passengers, 363 had more than one bag. Complete parts a through d below. a. Based on this sample, develop and interpret a 95% confidence interval estimate for the proportion of the traveling population that would have been impacted had the one-bag limit been in effect. Determine the confidence interval. ?? ——— ?? (Round to three decimal places as needed. Use ascending order.) Which statement below correctly interprets the…
Based on a poll of 1000 residents, a newspaper article claims that 62% of the residents in town favor the development of a recreational park on the west side of town. A community action group interested in preserving the environment claims that 45% of the town’s residents favor the development of a recreational park. To determine whether the sample supports the population proportion, a simulation of 100 trials is run, each with a sample of 200, using the point estimate of the population. The minimum sample proportion from the simulation is 0.46 and the maximum sample proportion is 0.76. a. What is the point estimate of the population? b. The margin of error of the population proportion is found using an estimate of the standard deviation. What is the interval estimate of the true population proportion? c.The margin of error of the population proportion is found using the half the range. What is the interval estimate of the true population proportion? d. Is the community action…
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Some shrubs have the useful ability to resprout from their roots after their tops are destroyed. Fire is a particular threat to shrubs in dry climates, as it can injure the roots as well as destroy the aboveground material. One study of resprouting took place in a dry area of Mexico. The investigation clipped the tops of samples of several species of shrubs. In some cases, they also applied a propane torch to the stumps to simulate a fire. Of 17 specimens of a particular species, 6 resprouted after fire. Estimate with 95% confidence the proportion of all shrubs of this species that will resprout after fire.Interval:
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