<span>6x^2 + 12x – 7 = 0
Use the quadratic formula:
x = 0.47 and x = -2.47
</span>
Use the quadratic formula:
x = 0.47 and x = -2.47
</span>
Shanice was planning a field trip to Argentina. Before goin, she did some research and learned that the exchange rate is $1 for
1 answer:
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<h3>Answer: B) 31.348</h3>
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Work Shown:
We will never use the alpha = 0.05 value when computing the test statistic. So we can ignore alpha for this particular problem.
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n = 40 is the sample size.
s = 2.6 is the sample standard deviation
= sigma = 2.9 is the population standard deviation (ie the claimed standard deviation for all the pay phones)
Test Statistic for chi-square
