I attempted this problem by using a null hypothesis (mean heat flux is less than or equal to 29), an alternate hypothesis (mean heat flux is less than or equal to 29), and was attempting to use a Z or a T test statistic, however I can't sem to figure out whether the problem is using a sample standard deviation or a population standard deviation (which would help me choose whether to use a Z or T test statistic). Any explanation regarding whether the problem is using a sample standard deviation or a population standard deviation would be greatly appreciated. Thank you. 62. The article "Orchard Floor Management UtilizingSoil-Applied Coal Dust for Frost Protection" (Agri.and Forest Meteorology, 1988: 71-82) reports the fol-lowing values for soil heat flux of eight plots coveredwith coal dust.34.7 35.4 34.7 37.7 32.5 28.0 18.4 24.9The mean soil heat flux for plots covered only withgrass is 29.0. Assuming that the heat-flux distribution isapproximately normal, does the data suggest that the coaldust is effective in increasing the mean heat flux over thatfor grass? Test the appropriate hypotheses using a = .05.

Answered: Image /qna-images/answer/acb9fb61-04f1-4f0a-90da-2995fbafc7ad.jpg

Answered: 62. The article "Orchard Floor…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Question

I attempted this problem by using a null hypothesis (mean heat flux is less than or equal to 29), an alternate hypothesis (mean heat flux is less than or equal to 29), and was attempting to use a Z or a T test statistic, however I can't sem to figure out whether the problem is using a sample standard deviation or a population standard deviation (which would help me choose whether to use a Z or T test statistic). Any explanation regarding whether the problem is using a sample standard deviation or a population standard deviation would be greatly appreciated. Thank you.

62. The article "Orchard Floor Management Utilizing
Soil-Applied Coal Dust for Frost Protection" (Agri.
and Forest Meteorology, 1988: 71-82) reports the fol-
lowing values for soil heat flux of eight plots covered
with coal dust.
34.7 35.4 34.7 37.7 32.5 28.0 18.4 24.9
The mean soil heat flux for plots covered only with
grass is 29.0. Assuming that the heat-flux distribution is
approximately normal, does the data suggest that the coal
dust is effective in increasing the mean heat flux over that
for grass? Test the appropriate hypotheses using a = .05.

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