Show transcribed image text 21. -4 points DavcraSat9 8.E.062 hy Notes Ask Your An article reports the following values for soil heat flux of eight plots covered with coel dust 32.3 32.1 32.3 36.9 37.7 28.5 18.4 24.5 The mean soil heat flux for pots covered only with grass is 29.0. Assuning that the heat-flux distribution is approximately normal, does the data suggest that the coal dust is effective in intreasing the mean heat flux over that for grass? Test the appropriate hypotheses using = 0.05 State the appropriate hypotheses. Hai Ï 29 Hal Ï = 29 Calculate the teat statistic and determine the P-valuc. (Round your test statistic to two decimal places and your P-value to three decimal places.) P-value State the conclusion in the problem context. Do not reject the null hypothesis. There is sufficient evidence to conclude that there was an increase in mean heat flux. Reject the null hypothesis. There is sufficient evidence to conclude that there was an increase in mean heat flux Do not reject the null hypothesis. There is not suffident avidance to condude that there was an increase in mean heat flux. Reject the null hypcthesis, There is not sufficient evidence to condude that there was an increese in meen heot ux You may need to use the appropriete table in the Appendix of Tables to answer this question.
21. -4 points DavcraSat9 8.E.062 hy Notes Ask Your An article reports the following values for soil heat flux of eight plots covered with coel dust 32.3 32.1 32.3 36.9 37.7 28.5 18.4 24.5 The mean soil heat flux for pots covered only with grass is 29.0. Assuning that the heat-flux distribution is approximately normal, does the data suggest that the coal dust is effective in intreasing the mean heat flux over that for grass? Test the appropriate hypotheses using = 0.05 State the appropriate hypotheses. Hai Ï 29 Hal Ï = 29 Calculate the teat statistic and determine the P-valuc. (Round your test statistic to two decimal places and your P-value to three decimal places.) P-value State the conclusion in the problem context. Do not reject the null hypothesis. There is sufficient evidence to conclude that there was an increase in mean heat flux. Reject the null hypothesis. There is sufficient evidence to conclude that there was an increase in mean heat flux Do not reject the null hypothesis. There is not suffident avidance to condude that there was an increase in mean heat flux. Reject the null hypcthesis, There is not sufficient evidence to condude that there was an increese in meen heot ux You may need to use the appropriete table in the Appendix of Tables to answer this question.
