Question
An SRS of 155 flights of a large airline (call this airline 1) showed that 130 were on time. An SRS of 155 flights of
An SRS of 155 flights of a large airline (call this airline 1) showed that 130 were on time. An SRS of 155 flights of another large airline (call this airline 2) showed that 142 were on time. Letp1andp2be the proportion of all flights that are on time for these two respective airlines. Is airline 2 more reliable? In other words, does airline 1 have a lower on-time rate compared to airline 2? Carry out an appropriate test using a significance level of 0.02.
(a) What are the null and alternative hypotheses?
H0:
HA:
(b) What is the test statistic? (Round your answer to 2 decimal places, if needed.)
(c) Using the statistical table, what is thep-value? (Round your answer to 4 decimal places, if needed.)
(d) Based on thep-value, rejector fail to rejectthe null hypothesis ?
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