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likoan [24]
3 years ago
10

A 90% confidence interval for the average weight (in pounds) of Americans was found to be (185, 210). The point estimate for thi

s confidence interval is:_______
a. 25
b. 12.5
c. 197.5
d. 1.645
Mathematics
1 answer:
Lynna [10]3 years ago
3 0

Answer:

B. 12.5

Step-by-step explanation:

We have the lowe confidence interval = 185

The upper confidence interval = 210

Mean of X = (lower confidence + upper confidence interval)/2

Mean of X = 185 + 210/2

= 197.5

The margin of error = the upper confidence interval - mean of X

= 210-197.5

= 12.5

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NemiM [27]
Point-slope form:

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Here that would look like:

y - 2 = 12(x - (-8))
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The answer:
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Hope this helps.
5 0
4 years ago
According to the Rational Root Theorem, what are all the potential rational roots of f(x) = 5x - 7x + 11?
Maksim231197 [3]

Answer:

±1, ±11, ±1/5, ±11/5

Step-by-step explanation:

f(x) = 5x³ - 7x + 11

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factors of the leading coefficient: ±1, ±5

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6 0
3 years ago
What is the correct answer?
gavmur [86]

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=16x²+14y+3

3 0
3 years ago
On a piece of paper, graph y&lt;-2/5x+1, then determine which answer choice matches the graph you drew
yanalaym [24]
Graph B.
Because y< so shade underneath the line
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8 0
3 years ago
Read 2 more answers
What is the 48th term of the arithmetic sequence with this explicit formula?
g100num [7]

Answer:

D

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Put n as 48 and solve.

-11 + (48 - 1)(-3)

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