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makvit [3.9K]
3 years ago
13

I need help please!! 10 points

Mathematics
2 answers:
a_sh-v [17]3 years ago
7 0

the correct answer should be 110 which is Answer A

Rzqust [24]3 years ago
7 0

The graph clearly shows that the angle in question lies between 90 degrees and 180 degrees.  This automatically rules out answers B, C and E.  Also rule out answer D, because 175 degrees is nearly 180 degrees.  The 110 degree angle is clearly in Quadrant II, not so close to 180 degrees.

The angle shown is approx. 110 degrees.

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Clare made $160 babysitting last summer. She put the money in a savings account that pays 3% interest per year. If Clare doesn't
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Answer:

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Step-by-step explanation:

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Express the confidence interval 0.555 less than 0.777 in the form Modifying above p with caret plus or minus Upper E.
Elina [12.6K]

Complete Question

Express the confidence interval 0.555 less than p less than  0.777 in the form Modifying above p with caret plus or minus Upper E.

Answer:

The modified representation is \r p \pm  E  = 0.666 \pm  0.111

Step-by-step explanation:

From the question we are told that

    The  confidence interval interval is  0.555 <  p <  0.777

Now looking at the values that make up  the up confidence interval we see that this is a symmetric  confidence interval(This because the interval covers 95%  of the area under the normal curve which mean that the probability of a value falling outside the interval is 0.05 which is divided into two , the first half on the left -tail and the second half on the right tail  as shown on the figure in the first uploaded image(reference - Yale University ) ) which means

     Now  since the confidence interval is  symmetric , we can obtain the sample proportion as follows

             \r p  =  \frac{0.555 + 0.777}{2}

            \r p  =0.666

Generally the margin of error is mathematically represented as

            E  =  \frac{1}{2}  *  K

Where  K is the length of the confidence interval which iis mathematically represented as

           K  =  0.777 -0.555

         K  = 0.222

Hence  

          ME  =  \frac{1}{2}  *  0.222

           ME  =  0.111

So the confidence interval can now be represented as

        \r p \pm  E  = 0.666 \pm  0.111

     

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If this is correct the answer would be
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Hope this helps!
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ipn [44]

If it's mutiple choice can I see the options :) would make this easier

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