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:

i just took the test, the correct answer is .. 31.5 in.

the correct answer option is (2x-3)(2x+3).

step-by-step explanation:

we are given the following expression and we are to factorize it:

we are to find such factors that when multiplied they give a result of 36 (9 x 4 = 36) and when added they give a result of 0.

the two such factors of 36 are negative six and postive six.

factorizing the given expression to get:

therefore, the correct factorization of is (2x-3)(2x+3).