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Elena-2011 [213]
3 years ago
9

A newspaper plans to conduct a survey for the upcoming presidential election in order to estimate the proportion of the populati

on, p, who supports a certain candidate. What is the smallest sample size needed to obtain an estimate that is within 4% of the true proportion p at the 96% confidence level
Mathematics
1 answer:
xxTIMURxx [149]3 years ago
6 0

Answer:

660

Step-by-step explanation:

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Is 3/5 equivalent to 0.35
MatroZZZ [7]
3/5 = .6
So, 3/5 is not equivalent to .35
4 0
3 years ago
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Work out the size of angle x 126 degrees exterior and 43 degrees interior
grigory [225]

Answer:

The answer is 83°

Step-by-step explanation:

by the sum of iner and outer angle=180°

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8 0
2 years ago
Aunty Joan packs a packet of sweets to Alice and Olivia. Alice and Olivia share sweets in the ratio 7:3. Alice gives 3 sweets to
aivan3 [116]

Initially, Alice had 28 sweets and Olivia 12 sweets.

Step-by-step explanation:

First assume that Aunty Joan has x number sweets.

Alice and Olivia shared the x sweets in a ration of 7:3, this means

Alice had 7/10 x sweets and Olivia had 3/10 sweets.

Alice gives 3 sweets to Olivia, Alice will remain with ;

\frac{7}{10} x-3

Then the new ratio changes to 5:3 which means Alice will have 5/8 x number of sweets.

Equate the number of sweets for Alice in the two cases, which is

\frac{5}{8}x=\frac{7}{10} x-3\\ \\\frac{7}{10} x-\frac{5}{8} x=3\\

\frac{56x-50x}{80} =3\\\\\\\frac{6}{80} x=3\\\\\\6x=80*3\\\\\\x=240/6\\\\x=40

So there were 40 sweets at first

Using the ratio of 7:3 then

Alice had 7/10 *40 = 28 sweets

Olivia had 3/10*40= 12 sweets

Alice gave Olivia 3 sweets, so she will remain with 28-3 =25 sweets. Olivia will now have 15 sweets.The new ratio will be 25:15 simplified as 5:3.

Learn More

Ratio : brainly.com/question/11095585

Keywords : Ratio

#LearnwithBrainly

5 0
3 years ago
Which numbers are rational? select all that apply. A. pi B. √50 C. 2.3 D. √144
aev [14]
C. 2.3
D.√144


Rational roots or decimals are numbers that have an end point. 

pi 'technically' never ends, while √50 = 7.07106781<span>…, which never ends either
</span>

hope this helps
5 0
3 years ago
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Find the sum of the sequence.<br> 33+34+35+36+...+130<br> I am unsure of how to solve this problem.
nadezda [96]
There are 98 terms.
98*(33+130)/2 = 7987
3 0
3 years ago
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