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
Zinaida [17]
2 years ago
12

A survey was given to a random sample of 1450 residents of a town to determine whether they support a new plan to raise taxes in

order to increase education spending. Of those surveyed, 48% of the people said they were in favor of the plan. Determine a 95% confidence interval for the percentage of people who favor the tax plan, rounding values to the nearest tenth.
Mathematics
1 answer:
MAVERICK [17]2 years ago
3 0

Answer:

(0.4543 ; 0.5057)

Step-by-step explanation:

This is a confidence interval for one sample proportion :

Phat , = 0.48

Sample size = 1450

1 - phat = 1 - 0.48 = 0.52

Zcritical = 95% ; Zcritical at 95% = 1.96

Using the relation :

Phat ± Zcritical *√[phat(1-phat) / n]

√[phat(1-phat) / n] = √(0.48*0.52) /1450) = 0.0131201

Lower boundary :

0.48 - (1.96 * 0.0131201) = 0.4543

Upper boundary :

0.48 + (1.96 * 0.0131201) = 0.5057

(0.4543 ; 0.5057)

You might be interested in
Please help!! Will give brainliest to best answer.
Elena L [17]
B as it goes through the correct and average amount of points on the graph, hope this helps
8 0
3 years ago
Read 2 more answers
A shopkeeper purchased hammocks for $800 and sold them at a discount of 25%. What was the selling price? Choose the correct opti
myrzilka [38]

Answer:

B

Step-by-step explanation:

25% of 800 is 200, so 800-200 is 600

6 0
2 years ago
Clea estimates that a glass contains 250.55 mL of water. The actual amount of water in the glass is 279.48 mL. To the nearest te
inn [45]
The answer is %30.93 hope this helps
7 0
3 years ago
Read 2 more answers
2x − y = −4→10x − 5y = −20 3x 5y = 59→3x 5y = 59 13x = 39 which equation can replace 3x 5y = 59 in the original system and still
malfutka [58]
13x = 39 can replace 3x + 5y = 59 in the original system and still produce the same solution.
8 0
3 years ago
Mrs. Carson pays Kristen $48 for babysitting six hours and mr.vanquez pays her $67.50 for babysitting nine hours who pays Kriste
brilliants [131]
Mrs Carson gives the better deal, this is becuase when i set up an inequality 48/6 and 67.50/9, i divided 48 by 2 then added 24 to 48 so i could get them both so i can see what they give, so Mrs Carson gives 72 dollars every 9 hours and thats better than 67.50.
5 0
3 years ago
Other questions:
  • Help with number 9 please!asap
    9·1 answer
  • Ismael
    7·1 answer
  • (Please help. I screenshot the question and choices D: )
    11·2 answers
  • Which statement is logically equivalent to the following conditional statement?
    11·1 answer
  • Grapes cost $4.99 for 4 pounds at the supermarket.They 6.99 for 6 pounds at food mart.Witch store has a better deal?
    12·1 answer
  • The x-intercept of 2x + 3y = 12
    15·1 answer
  • If you measure 5/6 meter how many twelfths have you measured
    15·1 answer
  • HELP ASAP
    5·1 answer
  • If you ask the first 50 females who enter a restaurant to complete a survey about their experience, who is the sample?
    11·2 answers
  • Someone, please help this is also for my final grades so please do it correctly:)
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!