STT 231 EXAM 3 | QUESTIONS AND ANSWERS | 2026 UPDATE | 100%
CORRECT - MSU.
first condition of hypothesis test - (answer)10 successes/failures
second condition of hypothesis test - (answer)independence of data points
if value is contained in interval - (answer)accept null, p-val greater than significance level
if value NOT contained in interval - (answer)reject null, p-val smaller than significance level
chi sq goodness of fit - (answer)1 categorical variable follows proposed distribution
chi sq center - (answer)df
df - (answer)(rows-1)(columns-1)
chi sq intependence test - (answer)2 categorical variables
expected count - (answer)row total x column total / table total
H0 of independence test - (answer)variables are independent
HA of independence test - (answer)variables are associated
chi sq test stat - (answer)(obs - exp)2 / exp
interpretation of p-value with chi sq - (answer)probability of witnessing test stat or higher under
assumption H0 is true
CORRECT - MSU.
first condition of hypothesis test - (answer)10 successes/failures
second condition of hypothesis test - (answer)independence of data points
if value is contained in interval - (answer)accept null, p-val greater than significance level
if value NOT contained in interval - (answer)reject null, p-val smaller than significance level
chi sq goodness of fit - (answer)1 categorical variable follows proposed distribution
chi sq center - (answer)df
df - (answer)(rows-1)(columns-1)
chi sq intependence test - (answer)2 categorical variables
expected count - (answer)row total x column total / table total
H0 of independence test - (answer)variables are independent
HA of independence test - (answer)variables are associated
chi sq test stat - (answer)(obs - exp)2 / exp
interpretation of p-value with chi sq - (answer)probability of witnessing test stat or higher under
assumption H0 is true
