Question 8Mondayciii. Unknown parameter: u, population meanTuesday WednesdayThursdayAn incubation period is a time between when you contract a virus and when your symptoms start. Bysurveying randomly selected local hospitals, a researcher was able to obtain a sample of incubation periodsof 43 patients, and the sample average was found to be 6.15 days. Assume that the population standarddeviation is 1.7 days. Construct a 96% confidence interval for the mean incubation period of the novelcoronavirus.i. Procedure: [One mean Z procedure ✓✓ii. Assumptions: (select everything that applies)Simple random sampleSample size is greater than 30Normal populationPopulation standard deviation is knownPopulation standard deviation is unknownThe number of positive and negative responses are both greater than 10Saturday

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Answered: Question 8 De Monday iii. Unknown…

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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Part 1 of 3: The age when smokers first start from previous studies is normally distributed with a mean of 13 years old with a population standard deviation of 1.9 years old. A survey of smokers of this generation was done to estimate if the mean age has changed. The sample of 32 smokers found that their mean starting age was 14.3 years old. Find the 3-decimal small value of the 95% confidence interval of the mean Part 2 of 3 Find the 3-decimal large value of the 95% confidence interval of the mean Part 3 of 3 Find the 3-decimal margin of error
Question 7 Isabella wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 41 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 11.4 and a standard deviation of 1.3. What is the 99% confidence interval for the number of chocolate chips per cookie for Big Chip cookies? Assume the data is from a normally distributed population. Round answers to 3 decimal places where possible.
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The National Assessment of Educational Progress (NAEP) includes a mathematical test for eighth-grade students. Scores on the test range from 0 to 500. Suppose that you give the NAEP test to an SRS of 2500 eighth-graders from a large population in which the scores have mean u = 282 and standard deviation o = 110. The mean x will vary if you take repeated samples. Suppose that we computed a 90% confidence interval for u. Which is true? This 90% confidence interval could have either a smaller or a larger margin of error than the 95% confidence interval. This varies from sample to sample. This 90% confidence interval would have a smaller margin of error than the 95% confidence interval. This 90% confidence interval would have a larger margin of error than the 95% confidence interval. This 90% confidence interval would have the margin of error as the 95% confidence interval.
A hotel chain wants to estimate the mean number of rooms rented daily in a given month. The population of rooms rented daily is assumed to be normally distributed for each month with a standard deviation of 240 rooms. During February, a sample of 25 days has a sample mean of 370 rooms. The critical value for a 90% confidence interval for this sample is ________. Question 12 options: 1) 2.58 2) 1.96 3) 2.649 4) 1.645
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which of the following sample data: sample size= 100 sample mean= 340z/hr sample variance= 90z/ hr construct a 98% confidence interval for μ. the population mean is what?
A sample of n = 24 data values randomly selected from a normally distributed population has variance s = 21.7. Construct a 90% confidence interval for the population variance. Round your endpoints to one decimal place. < o?
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Question 1A sports shop selects a random sample and records the sales of items made in China and thosemade in America. Country of Origin n Mean Std. DeviationChina 50 22.5 9.75America 33 33.15 11.6a) What is the SE Mean for the sales from China? b) Calculate a 95% confidence interval for the mean sales amount made in America

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