eBook ELHelp ?IMATHHosted by ALEKS Corp.Homework #513791011121314151617181920Question 8 of 20 (1 point) Attempt 1 of Unlimited View question in a popup10 2 Section Exercise 20A study found that of 4800 cell phone owners in 2011,575 owned a smartphone. The study was repeated in 2013, and 950 out of4800 cell phone owners owned smartphones.Part: 0 / 2இPart 1 of 2(a) Construct a 95% confidence interval for the increase in the proportion of cell phone owners with smartphones between2011 and 2013. Use tables to find the critical value and round the answer to at least three decimal places.dloA 95% confidence interval for the increase in the proportion of cell phone owners withsmartphones between 2011 and 2013 is

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Answered: Question 8 of 20 (1 point) Attempl 1 of…

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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Question 5 A common claim is that garlic lowers cholesterol levels. In a test of the effectiveness of garlic, 45 subjects were treated with doses of raw garlic, and their cholesterol levels were measured before and after the treatment. The changes in their levels of LDL cholesterol (in mg/mL) have a mean of 4.94 mg/mL and a standard deviation of 18.51 mg/mL. Construct a 95% confidence interval for the average net change in LDL cholesterol after the garlic treatment. i. Procedure: Select an answer Select an answer One proportion Z procedure One mean T procedure One mean Z procedure One variance x² procedure ii. Assumptions: (select everything that applies) Simple random sample Sample size is greater than 30 Population standard deviation is unknown Population standard deviation is known The number of positive and negative responses ar Normal population iii. Unknown parameter: Select an answer Select an answer u, population mean o², population variance p, population proportion
onsider a p-control chart with 3-sigma limits at 0.05 and 0.20: (A) What is sample size used? (B) If the process average shifts to p1₁=0.25, then probability of committing type Il error =
Question 3 Create a 90% confidence interval for a population proportion from a sample of size 84 with sample 46 proportion p 84 [three decimal accuracy] [three decimal accuracy] Submit Question a山T0 MAR 18 MacBook Air 80 F1 F2 F3 F4 F5 F6 F @ # $ 1 2 3 4 5
#25). Both photos are the same problem.
Chapter 5, Section 2, Exercise 043 Hearing Loss in TeenagersA recent study1 found that, of the 1771 participants aged 12 to 19 in the National Health and Nutrition Examination Survey, 19.5% had some hearing loss (defined as a loss of 15 decibels in at least one ear). This is a dramatic increase from a decade ago. The sample size is large enough to use the normal distribution, and a bootstrap distribution shows that the standard error for the proportion is SE=0.009.Find a 95% confidence interval for the proportion of teenagers with some hearing loss.Round your answers to two decimal places.The 95% confidence interval is to .
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Hoaglin, Mosteller, and Tukey (1983) presented data on blood levels of beta-endorphin as a function of stress. They took beta-endorphin levels for 19 patients 12 hours before surgery and again 10 minutes before surgery. The data are presented below, in fmol/ml Construct a 95% confidence limits on the true mean difference between endorphin levels at the two times described. Participant 12 hours before 10 minutes before 1 10 6.5 2 6.5 14.0 3 8.0 13.5 4 12 18 5 5.0 14.5 6 11.5 9.0 7 5.0 18.0 8…
QUESTION 9 A sample of 25 part-time workers had an average hourly income of $15.0 with a sample standard error of $2.00. a) What is the interval for average hourly wage of all part-time workers at the 95% confidence? (round interval to the second decimal For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).
Fifty-four wild bears were anesthetized, and then their weights and chest sizes were measured and listed in a data set. Results are shown in the accompanying display. Is there sufficient evidence to support Correlation Results the claim that there is a linear correlation between the weights of bears and their chest sizes? When measuring an anesthetized bear, is it easier to measure chest size than weight? If so, does it appear that Correlation coeff, r: 0.959614 a measured chest size can be used to predict the weight? Use a significance level of = 0.05. Critical r: +0.2680855 P-value (two tailed): 0.000 Но: Р H1:P (Type integers or decimals. Do not round.) Identify the correlation coefficient, r. (Round to three decimal places as needed.) Identify the critical value(s). (Round to three decimal places as needed.) O A. There is one critical value at r= . B. There are two critical values at r= ± Is there sufficient evidence to support the claim that there is a linear correlation between…
Question 36 According to statistics reported on CNBC, a surprising number of moter vehicles are not covered by insurance. Sample reults, consistent with the CNBC report, showed 46 of 200 vehicles were not covered by insurance. Part A What is the point estimate of the proportion of vehicles not covered by insruance? Part B Develop a 95% confidence interval for the population proportion.
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