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
mrs_skeptik [129]
3 years ago
9

A recent survey of 128 high school students indicated the following information about release times from school.

Mathematics
1 answer:
Delicious77 [7]3 years ago
3 0

Answer:

A) Interval estimate for those that want to get out earlier = (35%) ± (4%) = (31%, 39%)

Interval estimate for those that want to get out later = (39%) ± (4%) = (35%, 43%)

B) The group that wants to get out of school earlier can win after all the votes are counted if their true population proportion takes on a value that is higher than the closest true population proportion (for the group that wants to get out of school later)

That is, in the (31%, 39%) and (35%, 43%) obtained in (a), a range of (35.1%, 39%) and (35%, 38.9%) show how possible that the group that wants to get out of school earlier can win after all the votes are counted.

Step-by-step explanation:

The Interval estimate for the proportion is basically an interval of range of values where the true population proportion can be found with a certain level of confidence.

Mathematically,

Interval estimate = (Sample proportion) ± (Margin of error)

Margin of Error is the width of the confidence interval about the proportion.

a) Find the interval estimates

i) for those that want to get out earlier and

ii) those that want to get out later.

i) Sample proportion of those that want to get out earlier = 35%

Margin of Error = 4%

Interval estimate for those that want to get out earlier = (35%) ± (4%) = (31%, 39%)

ii) Sample proportion of those that want to get out later = 39%

Margin of Error = 4%

Interval estimate for those that want to get out later = (39%) ± (4%) = (35%, 43%)

b) Explain how it would be possible for the group that wants to get out of school earlier to win after all the votes are counted.

Since the interval estimates represent the range of values that the true population proportion can take on for each group that prefer a particular option, the group that wants to get out of school earlier van have their proportion take on values between 31% and 39%. If their true population takes on a value that is highest (which is very possible from the interval estimate), and the group with the highest proportion in the sample, (the group that wants to get out of school later, whose true population proportion can take between 35% and 43%) has a true population proportion that is less than that of the group that wants to get out of school earlier, then, the group that wants to get out of school earlier can win after all the votes are counted.

Hope this Helps!!!

You might be interested in
the sum of 2 numbers is 49. Twice the smaller number is 97 less than 3 times the larger number. What are the numbers?
ivanzaharov [21]

Answer:

let the larger and  smaller number be x and y respectively

first condition

x + y = 49

second condition

3x = 2y+97

3x-2y =97

Multiplying first condition by two and adding both equations

2x + 2y = 98

<u>3x -2y = 97</u>

5x =  195

x = 195/5 = 39

putting the value of x in

x + y = 49

y = 49 -39 = 10

again

Step-by-step explanation:

3 0
2 years ago
If a 35 ft rope is cut into two sections with one section 6 times as long as the other section, how long is the shorter piece?
Yuliya22 [10]
The smallest piece is 5ft, 5x6+5=35 
4 0
3 years ago
Read 2 more answers
Andrew bought a shirt and a pair of pants that cost $3675. The shirt costs double the pants. How much do they each cost?
vampirchik [111]

Answer: $7350

Step-by-step explanation:

$3675 x 2 = $7350

5 0
3 years ago
Read 2 more answers
(a)
grin007 [14]

Answer:

x=−41−−239 ​​=−41​+4i​239 ​=−0.2500−3.8649i x=−41+−239 ​​=−41​−4i​239  =−0.2500+3.8649i

Step-by-step explanation:

5 0
3 years ago
Alana and two of her friends evenly split the coast of the meal. They determine that each person owes $14.68. What’s the equatio
irina1246 [14]

Answer:

44.04

Step-by-step explanation:

it is 44.04.

4 0
2 years ago
Other questions:
  • All the 10 by 10 squares together shows 1,200. How many 10 by 10 squares do you have?
    12·1 answer
  • What is the next number in this sequence 7, 16, 8, 27, 9, ?
    15·1 answer
  • The position of an object along a vertical line is given by s(t) = −t3 + 3t2 + 7t + 4, where s is measured in feet and t is meas
    12·2 answers
  • Need help with question please.
    10·2 answers
  • enter an internet value that could be used in each of the blanks below to make the polynomial factorable
    7·1 answer
  • HELPPPPPP MEEEE THANKSS
    7·2 answers
  • Find the directrix of the parabola y = 1∕8(x – 2)2 – 3.
    5·1 answer
  • Please answer the question .
    11·1 answer
  • tyrone wants to fix six containers with 4/5 of a cup of lemonade how much lemonade will he need to make to fill six containers​
    11·1 answer
  • The figure below shows the ideal pattern of movement of a herd of cattle, with the arrows showing the movement of the handler as
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!