Answer:
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Step-by-step explanation:
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Answer:
The margin of error of the poll is 8%.
Step-by-step explanation:
This is a confidence interval. A confidence interval has both a lower end and an upper end.
The true proportion is the midpoint between the two ends.
The margin of error is the absolute difference between the proportion and the ends(which is the same, upper end - proportion = proportion - lower end),
In this problem, we have that:
The lower end is 52%.
The upper end is 68%.
The proportion is (52 + 68)/2 = 60%.
The margin of error is 60 - 52 = 68 - 60 = 8%.
The 105 per hour mechanic worked for 10 hours and the other worked for 15. here's the math.
Answer:
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Step-by-step explanation:
Answer:
The exact value of tan(45°) is 1
Step-by-step explanation:
I hope it's helpful!
