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
Allushta [10]
3 years ago
13

Professor York randomly surveyed 240 students at Oxnard University and found that 150 of the students surveyed watch more than 1

0 hours of television weekly. How many additional students would Professor York have to sample to estimate the proportion of all Oxnard University students who watch more than 10 hours of television each week within ±3 percent with 99 percent confidence?
Mathematics
1 answer:
BaLLatris [955]3 years ago
5 0

Answer:

1727 students

Step-by-step explanation:

Here we have the formula for sample size given as

n = \frac{p(1-p)z^2}{ME^2}

Where:

p = Mean

ME = Margin of error = 3

z = z score

Therefore, we have

p = 150/240 = 0.625

z  at 99 % = 2.575

ME = \pm3%

Therefore n = \frac{0.625(1-0.625)2.575^2}{0.03^2} = 1726.73

The number of students Professor York have to sample to estimate the proportion of all Oxnard University students who watch more than 10 hours of television each week within ±3 percent with 99 percent confidence = 1727 students.

You might be interested in
What is 1 5/8 rounded to the nearest half A.1 B.1 1/2 C.2 D.2 1/2
Ipatiy [6.2K]
1 1/2 I think is the answer
4 0
3 years ago
Read 2 more answers
Determine the center and scale factor for the dilation shown below
iren2701 [21]
A center at q scale factor of 1/2
3 0
3 years ago
I really need help with these 4 questions, whoever answers CORRECTLY gets brainliest.
Citrus2011 [14]

B
B
D
A
Explanation, I have a 128% in math rn…
7 0
3 years ago
Read 2 more answers
Is ab perpendicular to cd ? Explain.
Afina-wow [57]
We know that
if two lines are perpendicular
then
the slopes 
m1*m2=-1

step 1
find the slope AB
A (0,2)
B (-3,-3)
m=(y2-y1)/(x2-x1)-----> m=(-3-2)/(-3-0)-----> m=-5/-3----> m1=5/3

step 2
find the slope CD
C (-4,1)
D (0,-2)
m=(y2-y1)/(x2-x1)-----> m=(-2-1)/(0+4)-----> m=--3/4----> m2=-3/4

step 3
multiply mi*m2
(5/3)*(-3/4)-----> -15/12
so
15/12 is not -1
therefore
 AB is not perpendicular to CD
4 0
3 years ago
Li’s recipe uses 3 2/3 cups of flour. He plans to make 4 batches. How much flour will li need. I need help on finding out what t
pishuonlain [190]

Answer:

14 and 2/3rd cups of flour for 4 batches

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • What number do you divide by 9 to get -5?
    6·2 answers
  • The height reached by the rocket depends on the amount of fuel
    13·2 answers
  • A FISH TANK AT AN AQUARIUM HAS A VOLUME OF 1568 CUBIC FEET AND A DEPTH OF 8 FEET. IF THE BASE OF THE TASNK IS SQUARE WHAT IS THE
    9·1 answer
  • WILL GIVE BRAINLIEST!
    11·1 answer
  • If f(x)=4x-1 find f(3)
    9·1 answer
  • Meg has 120 flowers at her flower stand. Of all the flowers, 1/4 are red , 1/8 are pink, 1/8 blue. Of the other half, 1/3 are ye
    14·1 answer
  • Pls help will mark brainliest and 30 points
    7·2 answers
  • A number cube is rolled three times
    6·1 answer
  •  Can someone pleaseeee help if you’re correct I’ll give u brainlist
    11·1 answer
  • HELP ME PLS ASAP <br><br> a and b
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!