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The drop down choices for population parameter include: the numbers of customers in the sample that prefer a window seat, the number of customers sampled, the proportion of all customers in the sample who prefer the window seat, or the proportion of all customers who prefer the window seat. The drop down choices for condition for using a Z distribution include: A simple random sample of more than 30 customers was taken, the sample taken was a simple random sample, or the true population proportion is known. Lastly, for conclusion choices include: insufficient evidence exists to conclude, or sufficient evidence exists to conclude.

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MAT 240: Applied Statistics home > 7.1: Hypothesis test for a population proportion
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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
Identify the population parameter.
window seat
208
Observations
400
Pick
Confidence Level
0.9
Critical value
1.28
What condition for using a z-distribution is met?
test statistic (z)
0.8
p-value
0.2119
Pick
What is the level of significance?
Ex: 0.12
What is the null hypothesis Ho? Pick v
What is the alternative hypothesis Ha? Pick v
Should Ho be rejected or does Ho fail to be rejected? Pick
What conclusion can be drawn from the data?
Pick

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