Abotanist is developing a strain of wheat plants that is expected to withstand high winds better than existing strains. she needs to estimate the true height of the plants when they are mature. she grows a crop of the new strain, randomly selects 100 mature plants, and measures their heights. which confidence interval is most appropriate for this study?

a. μ{"version": "1.1","math": "\mu"}, when σ{"version": "1.1","math": "\sigma"} is known
b. μ{"version": "1.1","math": "\mu"}, when σ{"version": "1.1","math": "\sigma"} is unknown
c. the true mean of the differences, for paired data
d. the difference between two means, using independent samples
e. one proportion
f. two proportions