Answered: Second Hand Smoke: Cotinine levels were…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

See similar textbooks

Related questions

Question

Second Hand Smoke: Cotinine levels were measured in a group of 40 non-smokers exposed to tobacco smoke. The mean of the sample is 60.56 mg/ml and the standard deviation is 138.08 mg/ml Also Cotinine levels were measure in a group of 40 non-smokers not exposed to tobacco smoke and the mean of the sample is 16.35 mg/ml and the standard deviation is 62.53 mg/ml. Cotinine is a metabolite of nicotine, meaning that when nicotine is absorbed in the body, cotinine is produced. use a 0.05 significance level to test the claim that non-smokers exposed to tobacco smoke have a higher nicotine level than non-smokers not exposed to tobacco smoke. Construct an appropriate confhdence interval for the hypothesis test in problem a) Confidence Interval b) Conclusion

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

Expert Solution