Answer:
A. Increase the level of confidence
Step-by-step explanation:
The margin of error is given by:
The margin of error is:
In which T is related to the level of confidence(the higher the level of confidence, the higher T is), s is the standard deviation of the sample and n is the size of the sample.
Increase the width:
That is, increasing the margin of error, as the width is twice the margin of error, the possible options are:
Increase T -> increase confidence level.
Increase s -> Increase the standard deviation of the sample.
Decrease n -> Decrease the sample size.
Thus, the correct answer is given by option A.
Hi so let's try to simplify 1/4... it's already simplified so if you were to try to simplify 2/8 you would divide 2 by 2 and 8 by 2 to get 1/4. But 1/4 isn't = to 1/2. So let's simplify 2/4, first, you would divide 2 by 2 and 4 by 2 to get 1/2. C is the answer!=D I hope this helps.
Answer:
The answer is below
Step-by-step explanation:
a)
Amount Stefan sold the bicycle and helmet to Jin = cost of bicycle + cost of helmet = $115 + $16 = $131
This amount that Jin bought both bicycle and helmet is 110% of what Stefan spent originally to buy the bike and helmet.
Let x = what Stefan spent originally to buy the bike and helmet = original price. Hence:
110% of x = $131
(110 / 100) * x = 131
1.1x = 131
x = $119.09
b)
Hence the profit made from selling the bike = $131 - $119.09 = $11.91
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Based on the image attached above, the measure of angle PQR is letter D which is 50° as the half of <span>100° is 50. </span>