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brilliants [131]
3 years ago
6

Two​ researchers, Jaime and​ Mariya, are each constructing confidence intervals for the proportion of a population who is​ left-

handed. They find the point estimate is 0.27. Each independently constructed a confidence interval based on the point​ estimate, but​ Jaime's interval has a lower bound of 0.242 and an upper bound of 0.298​, while​ Mariya's interval has a lower bound of 0.188 and an upper bound of 0.286. Which interval is​ wrong? Why?
Mathematics
1 answer:
alekssr [168]3 years ago
8 0

Answer:

Mariya​'s interval is wrong because it is not centered on the point estimate

Step-by-step explanation:

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A triangular plate with base 2 m and height 3 m is submerged vertically in water so that the tip is even with the surface. Expre
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Answer:

Hydrostatic Force = 35.28KN

Step-by-step explanation:

To solve this question, let's consider integrating the hydrostatic force from the top of the triangle to the bottom.

Formula for a thin horizontal slice of the triangle the force is;

δF=ρgxwδx

Where w is width of triangle; ρ is density of water and g is acceleration due to gravity

At depth x, the width of the triangle is w=2/3x.

Thus, F = (3,0)∫)ρgxwδx

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= integrating, we have;

F = (2/3)ρg[(3³/3) - (0³/3)]

F = (2/5)ρg [27/3] = (2/5)(1000)(9.8)(9) = 35280 N = 35.28 KN

6 0
4 years ago
Bill drove 469 miles in 7 hours. At the same rate, how long would it take him to drive 871 miles?
salantis [7]
469          871
------  = ---------
7              x

469x = 7(871)
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3 0
3 years ago
Read 2 more answers
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