Chicken Delight claims that 90% of its orders are delivered within 10 minutes of the time the order is placed. A sample of 100 orders revealed that 82 were delivered within the promised time. At the .10 significance level, can we conclude that less than 90% of the orders are delivered in less than 10 minutes?
a What is the Null Hypothesis?
Ho µ _____ _____
Ha µ _____ _____
b Hypothesis test being performed is? (Circle answer)
Left tail test, Right tail test Two tail test
c Degrees of freedom, df for the test statistic t is?
df = ________
d Numerical value of the test statistic t is? (Show work)
t = ________
e Method of calculation (Circle answer) Table Computer algorithm
Pvalue = _______
f Your Decision is? (Circle answer)
Null Hypothesis Alternate Hypothesis Insufficient information to make decision