The Promise Seed Co. is owned by Tim Carlton Jr. One of Promise’s most demanded seeds is corn. Promise continues to increase production to meet the growing demand. To this end, it conducts an experiment such as the one presented here to determine the combination of fertilizer and seed type that produces the largest number of kernels per ear.

Fert. 1 Fert. 2 Fert. 3 Fert. 4 Seed A 807 995 894 903 800 909 907 904 Seed B 1,010 1,098 1,000 1,008 912 987 801 912 Seed C 1,294 1,286 1,298 1,199 1,097 1,099 1,099 1,201

a. Determine if there is interaction between the type of seed and the type of fertilizer. Use a significance level of 0.05.

b. Given your findings in part

a, determine if there is a difference in the average number of kernels per ear among the seeds.

c. Repeat part b for the types of fertilizer. Use a significance level of 0.05.