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suter [353]
1 year ago
9

c{7}{10}" alt="\frac{1}{10} +\frac{7}{10}" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
Makovka662 [10]1 year ago
3 0

Answer given in the screenshot below. ↓

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Assume that a sample is used to estimate a population proportion p. find the margin of error e that corresponds to the given sta
Leno4ka [110]

Let p be the proportion. Let c be the given confidence level , n be the sample size.

Given: p=0.3, n=1180, c=0.99

The formula to find the Margin of error is

ME = z _{\alpha/2}  \sqrt{\frac{p*(1-p)}{n}}

Where z (α/2) is critical value of z.

P(Z < z) = α/2

where α/2 = (1- 0.99) /2 = 0.005

P(Z < z) = 0.005

So in z score table look for probability exactly or close to 0.005 . There is no exact 0.005 probability value in z score table. However there two close values 0.0051 and 0.0049 . It means our required 0.005 value lies between these two probability values.

The z score corresponding to 0.0051 is -2.57 and 0.0049 is -2.58. So the required z score will be average of -2.57 and -2.58

(-2.57) + (-2.58) = -5.15

-5.15/2 = -2.575

For computing margin of error consider positive z score value which is 2.575

The margin of error will be

ME = z _{\alpha/2}  \sqrt{\frac{p*(1-p)}{n}}

= 2.575  \sqrt{\frac{0.30*(1-0.3)}{1180}}

= 2.575 * 0.0133

ME = 0.0342

The margin of error is 0.0342

7 0
2 years ago
ASAP! GIVING BRAINLIEST! Please read the question THEN answer correctly! No guessing. Show your work or give an explaination.
lozanna [386]

Answer:

D

Step-by-step explanation:

Look at the graph. You want to see how much distance he is at 9 minutes. Go all the way to 9 minutes, then go up. What coordinate does it fall in? (9,80). He travelled 80 meters in 9 minutes. (D)

6 0
3 years ago
during the last snow storm, the snow accumulated at 4/5 inch/hour. if the snow continues t this rate for 10 hours, how much snow
Nookie1986 [14]
After 10 hours the snow would be 8 inches deep because 4/5x10 = 8
8 0
3 years ago
Read 2 more answers
How do you simplify the expression
zepelin [54]
PEMDAS
12-14=-2
-2-5=-7
-7-9=-16
-16-4=-20
-20 is the answer
5 0
3 years ago
Read 2 more answers
Teams of four are competing in a quarter mile race each runner must run the same exact distance what is the distance each person
Semenov [28]
440 Yard each
Or
1320 feet each

I think this is what u are asking for but im not sure
8 0
3 years ago
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