Alocal board of education conducted a survey of residents in the community concerning a property tax levy on the coming local ballot. they randomly selected 850 residents in the community and contacted them by telephone. of the 850 residents surveyed, 410 supported the property tax levy. let p represent the proportion of residents in the community that support the property tax levy. what is the 90% confidence interval for p

a. 0.4489 to 0.5159.
b. 0.4542 to 0.5105.
c. 0.4487 to 0.5161.
d. 0.4463 to 0.5185.

B. 0.4542 to 0.5105.

Step-by-step explanation:

The confidence interval for population proportion is given by :-

, where = Sample proportion.

n= sample size.

z* = Critical value.

Let p represent the proportion of residents in the community that support the property tax levy.

As per given , we have

Of the 850 residents surveyed, 410 supported the property tax levy.

i.e. n= 850  ,

From z-table , the critical value corresponds to 90% confidence level = z*=1.645

Now, 90% confidence interval for p:

Hence, the correct answer is B. 0.4542 to 0.5105.

135 is your answer

step-by-step explanation:

try 180 times three then divide that number by 4 (sides) to get your answer. im glad to : )

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".