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Mkey [24]
3 years ago
14

NEED HELP PLEASE I BEG!!!!!!

Mathematics
2 answers:
beks73 [17]3 years ago
6 0
The confidence interval estimator of the population proportion is given by

C.I.=\hat{p}\pm M.E.

where: \hat{p} is the sample proportion, which is midway between the two intervals and M.E. is the margin of error which is the difference between each of the intervals and the sample proportion.

i.e. 
\hat{p}= \frac{76+84}{2} \% \\  \\ = \frac{160}{2} \%=80\%

Therefore, the margin of error is 4%.
serious [3.7K]3 years ago
4 0

Answer:

4

I took the quiz

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What is the vertex form of this and how do you graph this
luda_lava [24]

set it up like a y= equation.

which would be y=-x^2+7

to find the vertex, you substitute the 0s.

so 0=-(0)^2+7

-0^2=0

0+7=7

0=7

(0,7)

6 0
4 years ago
A certain stock starts the day at $273/8 per share. If it drops $21/2 during the day, what is its closing value? A. $247/8 B. $2
Elza [17]

Answer:

A. $ 24 7/8

Step-by-step explanation:

GIVEN: A stock starts the day at $27 3/8 per share.

             Share drops $2 1/2 during the day.

To Find : Closing value

Solution : first we need to find how many 1/8 are there in 1/2

So, \frac{\frac{1}{2} }{\frac{1}{8} } =4

when share drops by $2 then  share will be :

$27 - $2 =$25


and \frac{3}{8} - 4(\frac{1}{8})


⇒\frac{3}{8} - \frac{4}{8}


⇒\frac{-1}{8}


So, 25-\frac{1}{8}


⇒24\frac{7}{8}

So, its closing value is 24\frac{7}{8}.

7 0
4 years ago
Describe and correct the error in writing the phrase as an expression?
lesantik [10]

Answer:

12 < x

Step-by-step explanation:

In writing 12 less than a number x, the expression, 12 - x is wrong because "less than" is not the same thing as "minus" (-). Rather, the sign, "<" should have been used as follows:

12 < x.

4 0
3 years ago
Hey can you please help me posted picture of the question
Andrews [41]
If we observe the graph it crosses x-axis at the following points:
1) x = - 2
2) x = - 5

This means, x+ 2 and x + 5 are the factors of the polynomial. A polynomial can be expressed as the product of its factors. So we can express the given polynomial as (x + 2)(x + 5)

Thus the answer to above question is option C
4 0
3 years ago
Heather saves $5.00 on Monday. Each day after that, she decides to save twice as much as she did the previous day. If she saves
SCORPION-xisa [38]
5+10+20+30+0 add it up
6 0
3 years ago
Read 2 more answers
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