Complete Question
A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie. Among the 500 respondents, 12 % chose chocolate pie, and the margin of error was given as plus or minus 5 percentage points.What values do , n, E, and p represent? If the confidence level is 90%, what is the value of ?
Answer:
a
is the sample proportion
is the sample size is
is the margin of error is
represents the proportion of those that did not chose chocolate pie i.e
b
Step-by-step explanation:
Here
is the sample proportion
is the sample size is
represents the proportion of those that did not chose chocolate pie i.e
is the margin of error is
Generally is the level of significance and it value is mathematically evaluated as
Where is the confidence level which is given in this question as
So
<em><u>ANSWER</u></em>
Since the word altogether which is the key word means the sum so we will add all the fractions i.e
= 1/5 + 1/4 + 2/7
LCM of 5,4 and 7 = 140
= <u>⅕×140 + ¼×140 + ²/⁷×140</u>
140
= <u>2</u><u>8</u><u> </u><u>+</u><u> </u><u>3</u><u>5</u><u> </u><u>+</u><u> </u><u>4</u><u>0</u>
140
= <u>1</u><u>0</u><u>3</u>
140
Therefore the total fraction is <u>1</u><u>0</u><u>3</u>
140
A) Q + N = 63
B) .25Q + .05N = 8.35
Multiplying Equation B by -4
B) -Q -.2N = -33.40 then adding it to A)
A) Q + N = 63
.8 N = 29.60
N = 37
Q = 63 - 37 = 26
I don't think the store sign is accurate because its only making people more confuse
$12.40 is the answer
We have 4 months and 12 percent so 4/12 is 1/3, then you divide 12% by 3 and you get 4% 4% is .04 and .04 and then .04 times 310 is 12.4 or 12.30