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AnnyKZ [126]
3 years ago
7

A school has 2000 students a survey finds that 36 students out of a random sample of 80 student's are bilingual the margin of er

ror for the survey is +4% find the interval in which the total number of bih Guam students is most likely to lie
Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
5 0

Answer:

(820 ; 980)

Step-by-step explanation:

Given :

Sample size, n = 80

Number of bilingual from sample = 36

Sample proportion, phat = x / n = 36 / 80 = 0.45

Margin of Error = 4% = 0.04

Interval = sample proportion ± margin of error

0.45 ± 0.04

(0.41 ; 0.49)

(0.41 * 2000 ; 0.49 * 2000)

(820 ; 980)

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Y2-y1/x2-x1
(1,14) & (3,4)
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x1=1

So....

(4-14)/(3-1) = -10/2 = -5

The answer should be negative instead of positive, she probably subtracted 4 from 14 instead.
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3 years ago
Your class sells 64 tickets to a play.
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You sold 43 adult tickets
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A closing is March 5 for a rental property with an annual tax bill of $2800. Calculate and show the debit and credits for the ta
kicyunya [14]

Answer:

The debit and credits for the tax proration will be as follows:

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Step-by-step explanation:

The assignment of how much is owed to the responsible party is the major reason of a proration.

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8 0
3 years ago
Give each rate in miles per hour:
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a) 9/212 = #mph

b)0.000142045 Miles / 0.000277778 hours = # mph

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a) 9/212 = #mph

b)

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Step-by-step explanation:

If you want the "root" of the equation...

First get y by itself on one side. You should get y = - x - 8.

Notice that this is the equation of a straight line.

Then let y = 0, and solve for x. You should get x = -8.

So the solution or "root" of the equation is at the point (-8,0)

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3 years ago
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