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Illusion [34]
3 years ago
13

Imagine that you are conducting a poll to determine the percentage of adults who gamble at least once a month. As your sample si

ze increases (let us say from 100 to 400 cases), which of the following becomes true?
A. Confidence interval becomes wider
B. Margin of error becomes smaller
C. Amount of sampling error increases
D. Margin of error increases
Mathematics
1 answer:
Orlov [11]3 years ago
5 0

Answer:

Option B) Margin of error becomes smaller

Step-by-step explanation:

We are given the following information in the question:

A poll to determine the percentage of adults who gamble at least once a month.

We have to find what happens to the confidence interval as the sample size increases.

Margin of error =

\text{Critical Value}\times \displaystyle\frac{\sigma}{\sqrt{n}}

Confidence interval:

\mu \pm \text{Margin of error}

As the sample size increases, the margin of error decreases.

As the margin of error decreases the width of the confidence interval decreases.

Option B) Margin of error becomes smaller

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ikadub [295]

Answer:

  y = -8x -25

Step-by-step explanation:

The 2-point form of the equation of a line is useful when you are given 2 points.

  y = (y2 -y1)/(x2 -x1)(x -x1) +y1

  y = (7 -(-1))/(-4 -(-3))(x -(-3)) +(-1)

  y = 8/-1(x +3) -1

  y = -8x -25

7 0
3 years ago
Mr. Herman's class is selling candy for a school fundraiser. The class has a goal of raising $500dollar sign by selling c box of
hoa [83]

Answer:

$500. 500/2.75= 181 boxes

Step-by-step explanation:

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8 0
3 years ago
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Which of the following represents the coordinates of point A?
KiRa [710]
The coordinates of A will be (2P +M)/3
= (2(16, 14) +(1, 4))/3 = (33/3, 32/3) = (11, 32/3)

The appropriate choice is
  (C) (11, 32/3)

_____
You will note that the coordinates of A are the weighted average of the coordinates of the end points. The weighting is the reverse of the ratio of the line segments. That is, the point adjacent to the shortest segment gets the highest weighting. (This is typical of the solution to "mixture" problems.)
8 0
3 years ago
A number is equal to twice a smaller number plus 3. Yhe same number is equal to twice the sum of smaller number and 1. How many
allsm [11]

Answer:

There is no solution to the problem

Step-by-step explanation:

In order to find the solutions to the problem you can write the situation in an algebraic form.

You have that a number is equal to twice a smaller number plus 3. This can be written as follow:

x=2y+3      (1)

where x is the number and y is the smaller number

Furthermore, the same number x is equal to twice the sum of the smaller number and 1, which can be written as follow:

x=2(y+1)     (2)

To find the solution you equal the equation (1) with (2), and you solve for y:

2y+3=2y+1

3=1

You obtain an inconsistency, hence, the situation of the problem does not have solution

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3 years ago
Equation 1: 5x + 3y=8<br> equation 2: 4x + 7y= 34<br><br> 9x-10y=42 true
jarptica [38.1K]

Answer:

true

Step-by-step explanation:

5x + 4x = 9x

3y + 7y = 10y

8 + 34 = 42

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3 years ago
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