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blondinia [14]
3 years ago
13

What is the value of​

Mathematics
1 answer:
SashulF [63]3 years ago
4 0

Answer:

A. 7

Step-by-step explanation:

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Use the confidence interval to find the estimated margin of error. Then find the sample mean. A biologist reports a confidence i
mash [69]

Complete Question

A biologist reports a confidence interval of (3.5,4.9) when estimating the mean height (in centimeters) of a sample of seedlings. What is the estimated margin of error and the sample mean?

Answer:

The  margin of error is  E = 0.7

The  sample mean is  \=  x  =  4.2

Step-by-step explanation:

from the question we are told that

   The  upper limit is  k  =  4.9

    The  lower limit is  r = 3.5

Generally the margin of error is mathematically represented as

      E =  \frac{k - r}{ 2}

      E = \frac{ 4.9  -  3.5 }{2}

     E = 0.7

Generally the sample mean is mathematically evaluated as

        \=  x = k  -  E

=>    \= x  =  4.9 - 0.7

=>    \=  x  =  4.2

4 0
3 years ago
Complete each congruence statement by naming the corresponding angle or side. NO LINKS!!!​
Oksanka [162]

Answer:

Solution given:

19

<JKL=<KLS

20

FD=GD

5 0
3 years ago
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What is 27/125 as a circuit
SSSSS [86.1K]

Answer:

Step-by-step explanation:

Find an answer to your question The voltage is 27/125 and it has been reduced 3 times. What is the original voltage in the circuit?

6 0
3 years ago
A steep mountain is inclined 74 degree to the horizontal and rises to a height of 3400 ft above the surrounding plain. A cable c
8_murik_8 [283]

Answer:

3854ft

Step-by-step explanation:

By assuming that the cable is not doubled.

in order to find the length of the base of the mountain

tan74°=3400/x

x= 3400/tan74°

x≈ 975ft

Therefore, the length of the cable equals to

            =\sqrt{3400^2+(975 + 840)^2}

length≈ 3854ft

Thus, the shortest length of cable needed is 3854ft

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3 years ago
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Of the sixteen possibilities only one is HHHT, so the probability is 

\dfrac{1}{16}

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3 years ago
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