The Department of Transportation would like to investigate if a difference

# The department of transportation would like to

• Test Prep
• 16
• 97% (75) 73 out of 75 people found this document helpful

This preview shows page 7 - 9 out of 16 pages.

66.The Department of Transportation would like to investigate if a difference exists in the proportion of flights that arrive on-time between Alaska Airlines, Delta Airlines, Southwest Airlines, and United Airlines. The following data represent the number of on-time flights from random samples taken from each airline. The expectedfrequency of on-time flights fromthe Deltasample is _____.67.Lisa is a regional manager for a restaurant chain that has locations in the towns of Berwick, Milton, and Leesburg. She would like to investigate if a difference exists in AlaskaDeltaSouthwestUnitedNumber On-Time90958560 Sample Size 100 120 100 80
the proportion of customers who rate their experience as satisfactory or better between the three locations. The following data represent the number of customers who indicated they were satisfied from random samples taken at each location.The expectedfrequency ofsatisfied customersfrom the Berwicksample is _____. 68.The Department of Transportation would like to investigate if a difference exists in the proportion of flights that arrive on-time between Alaska Airlines, Delta Airlines, Southwest Airlines, and United Airlines. The following data represent the number of on-time flights from random samples taken from each airline. The expectedfrequency of on-time flights fromthe Southwestsample is _____. 69.When we reject the null hypothesis for a chi-square test of independence, we are concluding that there is no relationship between the two variables. 70.The chi-square goodness-of-fit test has no minimum requirement for the number ofobserved frequencies in each category. 71.Replications represent the number of data values assigned to each cell in a randomized block ANOVA table. 72.The ________ is another term for the variance of the sample data. 73.The sum of squares ________ measures the amount of variation between each data value and the grand mean. 74.Nintendo Sony would like to test the hypothesis that a difference exists in the average age of users of a Wii, a PlayStation, or an Xbox console game. The following data represent the age of a random sample of Wii, PlayStation, and Xbox users. The sum of squares betweenfor these observations is _____. BerwickMiltonLeesburgNumber Satisfied808560