You operate a travel advisory website, and want to give your users advice on airline timeliness. you select 3 airlines, and monitor their delays at 5 airports. you record average delay times for each airline, at each airport. then, you run a 2-way anova and get the following partial result:
anova results
source of variance ss df ms f
airline 409
airport 238
error
total 686
(a) what is the f-static for variability associated with airlines?
(b) if you're testing for significant effects at the 0.01 level of significance, what would be the critical value of f for assessing the effect of airlines?
(c) is the effect of airlines significant at the 0.01 level of significance?
(d) is the effect of airports significant at the 0.01 level of significance?

Aprisoner is trapped in a cell containing three doors. the first door leads to a tunnel that returns him to his cell after two days of travel. the second leads to a tunnel that returns him to his cell after three days of travel. the third door leads immediately to freedom. (a) assuming that the prisoner will always select doors 1, 2 and 3 with probabili- ties 0.5,0.3,0.2 (respectively), what is the expected number of days until he reaches freedom? (b) assuming that the prisoner is always equally likely to choose among those doors that he has not used, what is the expected number of days until he reaches freedom? (in this version, if the prisoner initially tries door 1, for example, then when he returns to the cell, he will now select only from doors 2 and 3.) (c) for parts (a) and (b), find the variance of the number of days until the prisoner reaches freedom. hint for part (b): define ni to be the number of additional days the prisoner spends after initially choosing door i and returning to his cell.

The scatterplot represents the total fee for hours renting a bike. the line of best fit for the data is y = 6.855x + 10.215. which table shows the correct residual values for the data set?

Select the correct answer from each drop-down menu. let c(g) be the total cost, including shoe rental, for bowling g games at pin town lanes. c(g) = 5g+3 so, c(6) = 8? 33? 30? or 14? this means that for a $6 shoe rental? for $6 per game? for 6 games? for a total cost of $6? , the games are $8 each? total cost is $33? number of games is 14? or total cost is $30? reset next