A scientist recorded the weights of 2La malaria-vector mosquitoes and compared them to their counterpart 2L + mosquitoes. The table below shows summary values broken down by sex.26

(a) Prepare an interaction graph (like Figure 11.7.3) to investigate whether the male versus female difference is the same for 2La as for 2L + mosquitoes.
(b) Does the interaction graph from part (a) suggest that there is an interaction present? If so, what does that mean? If not, what does that mean?
(c) The F-value for the test of no 2La versus 2L + difference is 0.94. If a = 0.05, state your conclusion regarding the null hypothesis, in the context of this setting.
(d) The F-value for the test of no female versus male difference is 1.9 x 10-15. If α = 0.05, state your conclusion regarding the null hypothesis, in the context of this setting.

Transcribed Image Text:

Female, Female, Male, Male 2La2L+ 2L+ 2La 1.500 0.273 20 534 0.9640.938 0.2770138 an 0.295 20 SD 20 20