A strategy which would produce a new confidence interval with an <u>increased</u> margin of error is to: A. use a 98% confidence level.
<h3>What is a confidence interval?</h3>
A confidence interval simply refers to a range of estimated values which defines the probability that a population parameter will lie within it.
<h3>How to calculate the margin of error?</h3>
Mathematically, a margin of error is calculated by using this formula:
From the above formula, we can deduce that the margin of error is directly proportional to the critical value and inversely proportional to the square root of sample size.
This ultimately implies that, increasing the confidence level from 95% to 98% would <u>increase</u> the critical value and by extension the margin of error and vice-versa.
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Answer:
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Answer is A :)
Step-by-step explanation:
Answer:
C. 3.5 mi
Step-by-step explanation:
Reference angle = angle of elevation
Angle of elevation = angle of depression = 6° (alternate angle theorem)
Hypotenuse = x
Opposite = 1905 ft
Apply trigonometric function SOH:
Sin 6° = Opp/Hyp
Sin 6° = 1905/x
x * Sin 6° = 1905
x = 1905/Sin 6°
x = 18,224.7 ft
Convert form feet to miles
1 mi = 5,280 ft
Therefore,
18,224.7 = 18,224.7/5,280
= 3.45164773 mi
≈ 3.5 mi (nearest mile)
Answer:
Picture is the answer.
Step-by-step explanation:
Answer:
The length of the patio is 32 ft and the width is 13 ft
Step-by-step explanation:
see the attached figure to better understand the problem
Let
L ----> the length of his patio
W ---> the width of his patio
we know that
----> equation A
----> equation B
substitute equation B in equation A and solve for W
Find the value of L
----> 
therefore
The length of the patio is 32 ft and the width is 13 ft
