In an experiment to determine the effect of ambient temperature on the emissions of oxides of nitrogen (NOx) of diesel trucks: ten trucks were run at temperatures of 40F and 80T. The emissions, in parts per billion, are presented in the following table. Using a paired sample t-test, can you conclude that the mean emmissions are higher at 40F?

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Truck 1 2 3 4 5 6 7 8 9 10

40F 834.7 753.2 855.7 901.2 785.4 862.9 882.7 740.3 748 848.6

80F 815.2 765.2 842.6 797.1 764.3 819.5 783.6 694.5 772.9 794.7

Null Hypothesis ?

Alternative Hypothesis ?

for difference :

n?

mean_{diff ?}

s_diff ?

std error ?

alpha= 0.05

df ?

test T ?

critical T ?

p-value ?

Do you reject or fail to reject the null hypothesis? Explain using both T and p-values. ?

State your conclusion.?