# What is the expected frequency of on time flights

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Chapter 15 / Exercise 2
Essentials of Statistics for the Behavioral Sciences
Gravetter/Wallnau Expert Verified
the number of on-time flights from random samples taken from each airline. What is the expected frequency of on-time flights from the Airline A sample?
40) Because hypothesis testing relies on a sample, there exists risk that the conclusions about the population will be wrong because of a sampling error.
QUIZ 31.A professor would like to test the hypothesis that the average number of minutes that a student needs to complete a statistics exam has a standard deviation that is less than 5.0 minutes. Whichof the following would be the correct hypothesisstatement?
2.If the null hypothesis is true for one-way ANOVA, the mean square total (MST) would be a good estimate for the _______.
3.A smaller standard error of the slope increases the likelihood that we can establish a significant relationship between the independent and dependent variables.
4.Consider the partially completed randomized block ANOVA summary table.
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Chapter 15 / Exercise 2
Essentials of Statistics for the Behavioral Sciences
Gravetter/Wallnau Expert Verified
SourceSum ofSquaresDegrees ofFreedomMean Sum ofSquaresFBetween 6003Block5Error750Total2,15023What is the degrees of freedom for the sum of squares error for this ANOVA procedure?
5.Consider the partially completed two-way ANOVA summary table.SourceSum ofSquaresDegrees ofFreedomMean Sumof SquaresFFactor B Factor A600200Interaction 144Error38412Total1,28823What is the mean sum of squares for Factor B for this ANOVA procedure?2
6.Consider the partially completed one-way ANOVA summary table.SourceSum of Squares Degrees ofFreedomMean Sumof SquaresFBetween 270Within18Total81021What is the degrees of freedom for the sum of squares between for this ANOVA procedure?
7.A dependent variable, x, explains the variation in another variable, which is called the independent variable, y.
8.With one-way ANOVA, there will be a greater chance of rejecting the null hypothesis when more variation in the data is due to the SSB rather than the SSW.
9.The technique of ________ enables us to describe a straight line that best fits a series of orderedpairs (x,y).
10.Two-way ANOVA incorporates a blocking factor to account for variation outside of the main factor in the hopes of increasing the likelihood of detecting a variation due to the main factor.
11.A coefficient of determination equal to zero indicates that there is no relationship between the independent and dependent variables.
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