Actrgllyhe original joint strength study was a 3 x 3 factorial study with constant sample size m = 3 and slmuled = 8.0 lbs. Below is an interaction plot from the whole study. 1250 Oak 200 Fine I50 Fir 100 Mile Carpenters Cascamite Glue Sh'engthUb) Use this information in answering questions 6. through 10. 6. By the standard of two-sided 95% condence limits, each mean plotted on the interaction plot is "good to within" about (Hint: Lab 10 Q2) a) 4.2 11;; b) 6.5 lb c) 9.7 lb (1) 16.8 lb 7. Which statement below is a wrong completion of the sentence? Pine and f1r are "soft" woods and oak is a "hardwood." The interaction plot suggests a) that soft and hard woods react fundamentally differently to changes in glue type. b) that soft woods have different Ipatterns of reaction to changes in glue type. c) that there are consistent differences in joint strength between different soft woods. 8. The interaction plot suggests that a) there are no interactions between wood type and glue type and there is no difference between pine and fir main effects. b) there are no interactions between wood type and glue type but there is a difference between pine and r main effects. c) there are both interactions between wood type and glue type and a difference between pine and fir main effects. (1) there are interactions between wood type and glue type but there is no difference between pine and r main effects