Answer:
the answer is a where x=8
Explanation:
cross multiplication method
WILL MARK BRAINLIEST!!! What is the exact value of tan(−3π4) ?
2 answers:
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Answer:
We accept the null hypothesis and conclude that voltage for these networks is 232 V.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 232 V
Sample mean, = 231.5 V
Sample size, n = 66
Sample standard deviation, s = 2.19 V
Alpha, α = 0.05
First, we design the null and the alternate hypothesis
We use Two-tailed t test to perform this hypothesis.
Formula:
Putting all the values, we have
Now,
Since,
We accept the null hypothesis and conclude that voltage for these networks is 232 V.
The oldster got a discount, so the original price is higher; let's call it x;
Answer: $14.00