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velikii [3]
3 years ago
8

What is the margin of error for a yes/no survey of 200 people with a proportion of 65% who answered \"yes\"?. A. ±3.37%. B. ±5.0

6%. C. ±6.75%D. ±8.43%. E. ±10.12%. *please help*
Mathematics
1 answer:
azamat3 years ago
6 0
\sqrt{(p*q)/n}

where p is the number of positive outcomes (yes) and q is the number of negative outcomes (no).

\sqrt{(0.65*(1-0.65))/200} = 0.0337 or 3.37%

answer is A.
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Please answer this correctly
Lynna [10]

Answer:

75%

Step-by-step explanation:

There is 1 whisker and quartiles 1-3 so:

25%+25%+25%=75%

6 0
3 years ago
Solve this and get 20 points
VikaD [51]

take x =initial deposit amount. then make equation:

x+75.5+55.25-25.15-18.65 = 210.85

simplify:

x+86.95 = 210.85

x=210.85 - 86.95

x=123.90

so Initial deposit amount is $123.90

check:  210.85+18.65+25.15-55.25-75.5 = 123.9

123.9 = 123.9

4 0
3 years ago
The perimeter of a square is 4 times the length of one side of the square. Which graph represents this situation? *
Arisa [49]

Answer:

A.

Step-by-step explanation:

Graph B must be incorrect as this is a directly proportional relationship. Likewise, graph C shows an inversely proportional relationship.

Between graph A and D, only graph A passes through the origin, which is true because if length is zero, perimeter is zero.

Hence the answer is Graph A.

6 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP PYTHAGOREAN THEOREM
kramer

11.66 or 12

Step-by-step explanation:

c^2 = a^2 + b^2

19^2 = 15^2 + b^2

361 = 225 + b^2

361 - 225 = b^2

136 = b^2

(square root of both sides)

b = 11.66or 12

7 0
2 years ago
Read 2 more answers
Mrs. Brown drove 105 miles in 2.5 hours. What was Mrs. Browns speed in miles per hour?
fiasKO [112]

Answer:

42mph.

Step-by-step explanation:

We know that the formula for miles per hour is.

r = d/t

R is our rate or miles per hour.

D is our distance.

T is our time.

In this case our distance is 105 miles.

And our times is 2.5 hours.

Therefore if we substitute them into our formula:

105mi ÷ 2.5hrs = 42mph

Hope this helped!

8 0
2 years ago
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