An airline would like information on which seat is preferred by customers. The airline assumes the majority of customers prefer the window seat, and is looking for evidence to support that claim. The results of a simple random sample of customer seat preference is shown below.

airline customer sample

window seat 208

observations 400

confidence level 0.9

critical value 1.28

test statistic (z) 0.8

p-value 0.2119

Identify the popular parameter (the # of customers in the sample that prefer a window seat, the # of customers sampled, the proportion of all customers in the sample who prefer a window seat, OR the proportion of customers who prefer a window seat?)

What condition for using a z-distribution is met? (a simple random sample of more than 30 customers taken, a sample taken was a simple random sample, OR the true population proportion is known)

level of significance?

what is the null hypothesis h0?

what is the alternative hypothesis ha?

should h0 be rejected or does it fail to be rejected?

what conclusion can be drawn from this data? sufficient or insufficient?