1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
hichkok12 [17]
3 years ago
14

Terrence randomly sampled 400 people and asked them if they prefer spring or fall. The results of his sample yielded an estimate

d population proportion of 43% who prefer spring. Deena randomly sampled 1,200 people and asked them if they prefer spring or fall. The results of her sample also yielded an estimated population proportion of 43% who prefer spring.
If Terrence and Deena use the same confidence level, which statement best describes the results of their margin of error calculations?

Terrence’s margin of error will be exactly three times as large as Deena’s.
Deena’s margin of error is half the amount of Terrence’s.
If Terrence samples 800 more people, his margin of error will be the same as Deena’s.
If Deena samples 400 fewer people, her margin of error would be exactly half the amount of Terrence’s.
Mathematics
2 answers:
AveGali [126]3 years ago
8 0

Answer:

Step-by-step explanation:

Margin of error is calculated as

Critical value multiplied by Std error of sample

= Critical value multiplied by square root of (variance/sample size)

Hence Margin of error

=z/t*(\frac{\sigma}{\sqrt{n} } )

Thus square root of n is inversely proportion to margin of error.

Thus we have margin of error of Terrena would be square root of 3 times that of Deena

Thus option a, b and d are wrong

C is right because when sample sizes equal, the margin of error also would be equal.

lisabon 2012 [21]3 years ago
4 0

on edge it's C. If Terrence samples 800 more people, his margin of error will be the same as Deena’s.

You might be interested in
Cheryl can travel 21.6 miles on one gallon of gas how far can cheryl travel on 6.2 gallons of gas
Lyrx [107]
Cheryl can travel 133.92 miles using 6.2 gallons of gas
8 0
3 years ago
Read 2 more answers
PLS DO THIS I WILL MARK BRAINLYNESS
Lunna [17]

Answer:

3 9/10,64,B,D

Step-by-step explanation:

8 0
2 years ago
The volume of rectangular bar is 640 cubic units. The width is 3 units more than the height and the length is 1 unit more than t
ASHA 777 [7]

Answer:

H = 5 , W = 8 , L = 16

Step-by-step explanation:

6 0
1 year ago
Solve each equation for the indicated variable. u = -3a - 3 , for a
MAXImum [283]

Answer:

a = \frac{u + 3}{-3}

Step-by-step explanation:

Isolate the variable, a. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

PEMDAS is the order of operation and stands for:

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtraction

First, add 3 to both sides of the equation:

u = -3a - 3

u (+3) = -3a - 3 (+3)

u + 3 = -3a

Next, divide -3 from both sides of the equation:

(u + 3)/-3 = (-3a)/-3

a = (u + 3)/-3

a = \frac{u + 3}{-3}  is your answer.

~

8 0
3 years ago
Solve the following whole number is 9- 3 upon 5​
diamong [38]

Answer:

2/5 okkkkkkkkkkkkkkkkkkkkk

3 0
2 years ago
Read 2 more answers
Other questions:
  • Anything can solve this
    10·1 answer
  • Help with geometry questions 45 points
    14·1 answer
  • Aisha just received a paycheck from her new job she spends some of it buying music online and saves the rest in a bank account h
    13·1 answer
  • What does 1/2(4-14y)=y+50 equal
    6·2 answers
  • The midpoint of (-4,15) and (22,3)
    13·1 answer
  • Various problems with data collection can cause some observations to be missing. Suppose a data set has 20 cases. Here are the v
    10·1 answer
  • 50 twelves – 3 twelves<br> NEED ANSWER AND HELP ASAP!!!!!!!
    11·2 answers
  • GIVING BRAINLIEST TO WHO ANSWERS THIS EASY MATH QUESTION FIRST...
    15·1 answer
  • Evaluate the Expression<br><br> 8√8.41 +1.8
    10·1 answer
  • 5. A ball is thrown upward with an initial velocity of 50 feet per second. The
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!