An article reports the following values for soil heat flux of eight plots covered with coal dust. 37.0 32.7 37.0 37.3 35.2 28.5 18.8 24.2 n USE SALT 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 hea flux over that for grass? Test the appropriate hypotheses using a = 0.05. State the appropriate hypotheses. O Ho: H = 29 H:µ< 29 O Hoi H# 29 Hai H = 29 Ο H: μ 29 Hi µ > 29 Ο H μ29 Hg:H # 29 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to three decimal places.) P-value =
An article reports the following values for soil heat flux of eight plots covered with coal dust. 37.0 32.7 37.0 37.3 35.2 28.5 18.8 24.2 n USE SALT 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 hea flux over that for grass? Test the appropriate hypotheses using a = 0.05. State the appropriate hypotheses. O Ho: H = 29 H:µ< 29 O Hoi H# 29 Hai H = 29 Ο H: μ 29 Hi µ > 29 Ο H μ29 Hg:H # 29 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to three decimal places.) P-value =
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Transcribed Image Text:An article reports the following values for soil heat flux of eight plots covered with coal dust.
37.0 32.7
37.0 37.3 35.2 28.5
18.8 24.2
n USE SALT
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 = 0.05.
State the appropriate hypotheses.
O Ho: µ = 29
H:µ < 29
|O Ho: µ # 29
Ha: µ = 29
Ο H: μ= 29
Ha: H > 29
Ο H: μ 29
Ha: u + 29
Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to three decimal places.)
t =
P-value =
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