The degrees of freedom for the sum of squares between for one-way ANOVA equal the number of populations being compared minus one.
Indicate whether the statement is true or false
Q. 2Travelocity would like to test if the average roundtrip airfare between New York and London is less than 1,400. A Type I error would occur if Travelocity concludes that the average airfare is _____________________________
_____________.
A) equal to 1,400 when, in reality, the average airfare is not equal 1,400 or more
B) not equal to 1,400 when, in reality, the average airfare is equal to 1,400
C) 1,400 or more when, in reality, the average airfare is less than 1,400
D) less than 1,400 when, in reality, the average airfare is 1,400 or more
Q. 3When the population standard deviations are not known to us when comparing two population means, we substitute the sample standard deviations in their place. When we make this substitution, we rely on the ________ to conduct the hypothesis test.
A) normal distribution
B) binomial distribution
C) Student's t-distribution
D) uniform distribution
Q. 4If the null hypothesis is false, the mean square between is a good estimate for the population variance.
Indicate whether the statement is true or false
Q. 5Entertainment Software Association would like to test if the average age of gamers (those that routinely play video games) is more than 30 years old. A random sample of 33 gamers was selected and their ages were recorded.
Assume that the standard deviation for the population of the age of gamers is 4.7 years and the true population mean for the age of gamers is 31.2 years. Using = 0.02, beta equals ________.A) 0.0434
B) 0.1247
C) 0.2918
D) 0.7224
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