:(((( help me im confused
1 answer:
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7x*7x=49x^2, so the lot measures 49x^2.
The sports field, however, measures 5x*5x=25x^2.
The difference between these is 49x^2-25x^2=
, or B.
The sports field, however, measures 5x*5x=25x^2.
The difference between these is 49x^2-25x^2=
Answer:
So the value of the test statistic is -0.85.
Step-by-step explanation:
We know that a sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 54% of the chips do not fail in the first 1000 hours of their use.
We get that:
We calculate the standar deviation:
We calculate the value of the test statistic:
So the value of the test statistic is -0.85.