The mean area : ¯ x of the several thousand apartments in a new development by a certain builder is advertised to be 1100 square feet. A tenant group thinks this is inaccurate, and suspects that the actual average area is less than 1100 square feet. In order to investigate this suspicion, the group hires an engineer to measure a sample of apartments to verify its suspicion. The appropriate null and alternative hypotheses, H0 and Ha, for μ are:
A. H0: ? = 1100 and Ha: ? 1100.
B. H0: ? = 1100 and Ha: ? < 1100.
C. H0: ? = 1100 and Ha: ? > 1100.
D. The hypotheses cannot be specified without knowing the size of the sample used by the engineer.

d

Step-by-step explanation:

i did that already and got it right so i hope its not wrong for you

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

company a

step-by-step explanation:

using the linear regression models , it is found that company a   pays about $14 more. but using the same regression (linear) company b pays about $10 more.

so company a pays more than b