Question

Evolution theory predicts a physiological cost of increased reproduction that translates in shorter life span. The data file Large.Fruitftly describes a study of the cost of sexual activity in male Drosophila. The authors randomly assigned male fruit flies to five sex conditions. In the first condition, the males were kept alone. In the second condition, each male was placed in the company of one virgin female (replaced every other day with a new virgin female to provide reproductive opportunities). The third condition had each male placed with eight virgin females. In the fourth condition, each male was placed with a newly inseminated female that was replaced every other day; these females do not usually mate for at least two days. The fifth condition had each male placed in the company of eight newly inseminated females. All other living conditions were the same for all five groups. The researchers recorded the longevity (in days) of each male fruit fly and its thorax length. The researchers confirmed by examining the females that the males kept with virgin females were indeed reproducing and that those kept with newly inseminated females were not. Is there evidence that the different sex conditions result in significantly different thorax lengths in laboratory male fruit flies? Check the conditions for ANOVA run the test and conclude. O O O O There is significant evidence that, on average, the different sex conditions result in significantly different thorax lengths in laboratory male fruit flies. There is not significant evidence that, on average, the different sex conditions result in significantly different thorax lengths in laboratory male fruit fies The data collected cannot be analyzed using ANOVA because the data deviates significantely from the normality assumption The data collected cannot be analyzed using ANOVA because the assumption of equal variances is not satisfied.

Answer 1

The correct option is There is not significant evidence that, on average, the different sex conditions result in significantly different thorax lengths in laboratory male fruit flies.