The claim is that smokers have a mean cotinine level greater than the level of 2.84 ng / mL found for nonsmokers. (Cotinine is used as a biomarker for exposure to nicotine.) The sample size is n= 892 and the test statistic ist = 52.657. Use technology to find the P-value. Based on the result, what is the final conclusion? Use a significance level of 0.10.State the null and alternative hypotheses.Ho: H(Type integers or decimals. Do not round.)The test statistic is.(Round to two decimal places as needed.)The P-value is.(Round to three decimal places as needed.)Based on the P-value, theresufficient evidence at a significance level of 0.10 tothe claim that smokers have a mean cotinine level greater than the level of 2.84 ng / mL found for nonsmokers.

Claim : The smokers have a mean cotinine level greater than the level of 2.84 ng/ml found for…

Answered: The claim is that smokers have a mean…

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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Similar questions

A pipes manufacturer makes pipes with a length that is supposed to be 19 inches. A quality control technician sampled 24 pipes and found that the sample mean length was 19.08 inches and the sample standard deviation was 0.24 inches. The technician claims that the mean pipe length is not 19 inches. What type of hypothesis test should be performed? What is the test statistic? What is the number of degrees of freedom? Does sufficient evidence exist at the α=0.01 significance level to support the technician's claim?
In your work for a national health organization, you are aware that for prior studies of the amount of sodium in a certain brand of cereal is 205 milligrams. Based upon your sample of 25 servings you find a mean sodium content of 218 milligrams, with a standard deviation of 15 milligrams. You want to test the hypothesis that the mean amount of sodium in this brand of cereal differs from the stated mean of 205 milligrams. For an α = .02 significance level, determine the Critical Value(s) that separate(s) the region of retention from the region(s) of rejection.
Use the pulse rates in beats per minute (bpm) of a random sample of adult females listed in the data set available below to test the claim that the mean is less than 73 bpm. Use a 0.10 significance level. Pulse Rates (bpm)657554103707035476687513564835267864148597540777895986047513979515092757251398888717959105745182765239
A pipes manufacturer makes pipes with a length that is supposed to be 11 inches. A quality control technician sampled 22 pipes and found that the sample mean length was 11.07 inches and the sample standard deviation was 0.19 inches. The technician claims that the mean pipe length is not 11 inches. What type of hypothesis test should be performed? What is the test statistic? What is the number of degrees of freedom? Does sufficient evidence exist at the α=0.05 significance level to support the technician's claim? Yes or No
A simple random sample of 35 horror has a mean duration of 107.3 minutes and the sample sandard deviation of song lengths is 17.8 minutes. Use a 0.05 significance level a) Use the TRADITIONAL METHOD to test the claim that the sample is from a population of movies with a mean greater than 100 minutes. b) What does the conclusion mean?
Use the pulse rates in beats per minute (bpm) of a random sample of adult females listed in the data set available below to test the claim that the mean is less than 72bpm. Use a 0.10 significance level. Pulse Rates (bpm)397770844090685537509648463663611049466431016869975339696250733684726455783778653841855867675284878077
(c) Rashid carried out pyrolysis of sawdust in a semi-batch reactor and obtained replicates of measurement under the same conditions in order to test the precision of the method. The recorded values for biochar are 22.23, 22.18, 22.25, 22.09, and 22.17 wt%. Using a suitable test, analyze whether the value of 22.09 wt% is a valid measurement at a 95% confidence level?
The Chancellor at Vanderbilt University is suspicious of the academic standards in the athletic departments of the Texas and Oklahoma, recent additions to the Southeastern Conference (SEC). Historically, student athletes attending SEC schools have a mean SAT score of 1060, though there is no valid measurement of the population standard deviation. Data from a sample of 50 University of Texas athletes shows a mean of 1000 with a standard deviation of 200. Is the Chancellor right to be suspicious (assuming a .05 significance level)? Conduct a one-sample t-test and report the following: (a) Find the value of the t-statistic using RStudio. (b) Is this a one-tailed or two tailed test? Why? (c) Find the correct critical value of t using RStudio.
According to the survey made by the Philippine Statistics Office, clothing expenditure averages p400 per person in urban areas and P356 in rural areas Assuming that these data involve a) sample sizes of 750 and 650 b) standard deviations of P75 and P65 respectively, does it appear that the two areas have equal clothing expenditure? Test the hypothesis at 90% significance level? 1. what is the computed value? 2. what is the Decision? 3. what is the conclusion?
The mean voltage and standard deviation of 10 batteries from each manufacturer were measured. The results are summarized in the following table. Manufacturer Sample mean voltage (millivolts) Sample standard deviation (millivolts) A 136 3 B 132 5 What type of hypothesis test should be performed? What is the test statistic? What is the number of degrees of freedom? Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the α=0.1 significance level?
A rods manufacturer makes rods with a length that is supposed to be 14 inches. A quality control technician sampled 33 rods and found that the sample mean length was 14.05 inches and the sample standard deviation was 0.27 inches. The technician claims that the mean rod length is more than 14 inches. What type of hypothesis test should be performed? What is the test statistic? What is the number of degrees of freedom? Does sufficient evidence exist at the α=0.01 significance level to support the technician's claim?
Using the following data, find the t-critical value and record the lower and upper limits: Sample size: 20 Mean: 20.87 Standard deviation: 14.50 Standard error: 3.24 Confidence Interval: 95% Level of Significance: 0.05

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