Question 12:
Correct option:
(3) The true average flight cost is significantly different from $380.51.
Explanation:
p value = 0.0274 is less than = 0.05. So, the difference is significant. Reject null hypothesis.
Conclusion:
The data support the claim that the true average is actually different from $380.51
Question 14
Correct option
(4) Test statistic = - 0.797. P - Value = 0.2129
Explanation:
Pooled Standard Deviation is given by:
Test Statistic is given by:
ndf = 296 + 155 - 2 = 449
One Tail - Left Side Test
By Technology, p - value = 0.2129
Question 12 (1 point) It is reported in USA Today that the average flight cost nationwide is $380.51. You have nev...
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