Although airline schedules and cost are important factors fo

Although airline schedules and cost are important factors for business travelers when choosing an airline carrier, a USA Today survey found that business travelers list an airline

Solution

H0: p =32.5% or 0.325

Ha: p not equals 0.325

Two tailed hypothesis test.

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Z statistic = -0.117

p value = 0.90686

As p value is very high, accept null hypothesis.

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b) 95% confidence interval for proportion =

Sample Size: 1993
Observed Proportion: 31.01%
Confidence Level: 95%

Confidence Interval: