Reference no: EM132464310
Problem: Jacob Lee is a frequent traveler between Los Angeles and San Diego. For the past month, he wrote down the flight times in minutes on three different airlines. The results are:
Goust Jet Red Cloudtran
51 50 52
51 53 55
52 52 60
42 62 64
51 53 61
57 49 49
47 50 49
47 49
50 58
60 54
54 51
49 49
48 49
a-1. Choose the right option.
Null hypothesis:
Ho: µ1 = µ2 = µ3
Ho: µ1 = µ2
a-2. Alternate hypothesis:
H1: Treatment means are same.
H1: Treatment means are not all the same.
a-3. State the decision rule for 0.05 significance level. (Round your answer to 2 decimal places.)
Reject HO if F >________
a-4. Complete the ANOVA table. (Round your SS, MS values to 1 decimal place, and F value to 2 decimal places.)
Source SS df MS F
Treatments _______ ______ _______ _______
Error _______ ______ _______ _______
Toatal _______ ______ _______ _______
a-5. Compute the value of the test statistic. (Round your answer to 2 decimal places.)
I Value of the test statistic_________
a-6. State your decision for the F value at the 0.05 significance level
There is________in the mean flight times.
b. Develop a 95% confidence interval for the difference in the means between Goust and Cloudtran. (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.)
The difference is between_________and__________