Contaminated water: Polychlorinated biphenyls (PCBS) are a group of synthetic oil-like chemicals that were at one time widely used as insulation in electricalequipment and were discharged into rivers. They were discovered to be a health hazard and were banned in the 1970s. Assume that water samples are beingdrawn from a river in order to estimate the PCB concentration. Suppose that a random sample of size 64 has a sample mean of 1.93 parts per billion (ppb).Assume the population standard deviation is o = 0.22 ppb.Part: 0 / 3Part 1 of 3(a) Construct a 98% confidence interval for the PCB concentration. Use tables or technology. Round your answers to at least two decimal places.The confidence interval is ( ,D

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Answered: Part 1 of 3 (a) Construct a 98%…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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USE 3 DECIMAL A researcher believes that reading habit of newspaper is decreasing every year. In order to see the true population proportion of people who are reading newspaper s/he collect a randomly selected people on the yearly basis . The following table gives the number of people who do not read newspaper with respect to the years . Construct a 90 % confidence interval for the true population proportion difference of people who are reading newspaper in 2005 and 2010 . 2010 2005 n 1200 1000 Number of people who do not read newspaper 300 400
Data Set: 12 15 5 7 9 12 13 6 14 15 14 14 13 14 8 8 10 11 8 6 8 13 6 12 13 6 10 9 14 13 10 14 10 5 13 13 14 6 9 12
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D3 can someone help me clarify this? how many patients at my facility had complications arising from elective cholecystectomy could help to develop a plan for earlier intervention as that has been shown to decrease complications. " Could you clarify what parameter (mean or proportion) you would be calculating here, Sara? You can't construct a confidence interval for a number or count.
Use the confidence interval to find the estimated margin of error. Then find the sample mean. A biologist reports a confidence interval of (3.0,4.4) when estimating the mean height (in centimeters) of a sample of seedlings. Question content area bottom Part 1 The estimated margin of error is enter your response here .
Determine the critical values for the confidence interval for the population variance from the given values. Round your answers to three decimal places. n = 22 and a = 0.02.
Identify a question you would like to answer using statistics which may be answered using a confidence interval in plain English. Example: What is the average GPA of an incoming student at MC Identify the parameter related to your question and its symbol and its name. Example: m, mean identify the statistic related to your question and its symbol Example: x(bar), sample mean List your data(try to get at least 10 in your sample). Example: 3.28, 2.41, 3.64, 1.28,3.56, 2.57, 3.10,2.94, 2.45, 3.16, 2.45 Describe your population of inteeest. Example: All students at MC Describe your sample. Example: 11 Studens in my statistics class Comment on how you obtained your sample Example: Conducted an email survey of the students in my statistics class Comment on the bias in your sample Example; This sample is biased since it is only people in math 117, who need certain perquisites to take the course, this underrepresents students without the…
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(this is for a biology paper I am interpreting my data) this question "Do the confidence intervals on your graph agree with the t-test results?" What does this mean/ what is it asking me to do? I have my student t-test p-values/results and my 95% CI results but how to I compare them? What is their relationship? How do i know if they are in agreeance?
Information about a sample is given. Assume that the sampling distribution is symmetric and bell-shaped. r = 0.34 and the standard error is 0.01. X Your answer is incorrect. (a) Indicate the parameter being estimated. Edit : P2 : P : *1 : H2 :: p : Pi :: A- : Pi : P2 :: r :: x2 : p X . The parameter of interest is LEGO eTextbook and Media Hint MacBook Pro ..
Using this data: {4, 5, 8, 11, 16, 8}, (a) Find the 90% confidence interval for the mean. (b) Interpret what does the interval mean?
HW Score: 0%, 6.1.23 Question He Construct the confidence interval for the population mean u. c=0.95, x= 15.3, o=7.0, and n=75 A 95% confidence interval for u is D. (Round to one decimal place as needed.) Enter your answer in the edit fields and then click Check Answer. All parts showing tact Us / Clear All Check Answer 080 acer

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Part 1 of 3 (a) Construct a 98% confidence interval for the PCB concentration. Use tables or technology. Round your answers to at least two decimal places. The confidence interval is ( D.