Hi
Calculate the p-value of the test to determine that there is sufficient evidence to infer u > 0
n= 100, x̄ = 1.5
Ho: u ≤ 0 Note: Ho MUST contain equality:: = or ≤ or ≥
Ha: u > 0 claim
generally a 95% confidence level is used. alpha = 0.05
= 1.5
p(1.5) = normalpdf(1.5)= .13 Using Calculator
.13 > .05 Fail to Reject Ho
(Note: If the p-value is greater than alpha = 0.05, so we fail to reject the null hypothesis)
That is: There is NOT sufficient evidence, at the 0.05 level of significance, to support a claim that u > 0