BUAL 2650 FINAL CORRECT 100%

BUAL 2650 FINAL CORRECT 100%
Tests of Significant Must Haves - ANSWERrandom sample
normal distribution
confidence level

P value test conclusion - ANSWERResults are/are not statistical significant at α =.05
and conclude.....

If null hypothesis is true... - ANSWERyou will get p value < .01 about one in a
hundred times

T distributions: - ANSWERsymmetric
single peak
more area in tails

Assumptions & Conditions for T distributions - ANSWERindependence assumption
randomization assumption
normal distribution


p value approach hypotheses - ANSWERHo: p = Po

Ha : p > Po
Ha : p < Po
Ha : p ≠ Po

confidence level - ANSWERThe probability that the interval estimate will include the
population parameter of interest, such as a mean or a proportion.

Po = - ANSWERhypothesized population

^p = - ANSWERsample population

z = - ANSWER^p - Po / √(Po)(qo) / n

P-value < α → - ANSWERreject H0 → conclude Ha

P-value > α - ANSWER→ fail to reject H0 → cannot conclude Ha


robust CI - ANSWERif confidence level or p value does not change very much when
conditions for use of procedure are violated

hypothesis for one mean t test - ANSWERHo: U = Uo
Ha: U ><≠ Uo

Uo = - ANSWERhypothesized difference of means