A sample of 1200 computer chips revealed that 31% of the chips fail in the first 1000 hours of their use. The company's promotional literature claimed that less than 34% fail in the first 1000 hours of their use. Is there sufficient evidence at the 0.05 level to support the company's claim?

In the data set shown below, what is the value of the quartiles?

{42, 43, 44, 44, 48, 49, 50}

A.Q1 = 43.5; Q2 = 44; Q3 = 49

B.Q1 = 43; Q2 = 44; Q3 = 48.5

C.Q1 = 43.5; Q2 = 44; Q3 = 48.5

D.Q1 = 43; Q2 = 44; Q3 = 49

Step-by-step explanation:

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