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
Over [174]
3 years ago
14

An exit poll of 1000 randomly selected voters found that 515 favored measure A. a. Construct a 99% confidence interval for the s

upport of measure A. b. Suppose measure A needs at least 50% support to pass, what are the null and alternative hypotheses if we were to test to see if measure A will pass? c. Compute the p-value of the above test.
Mathematics
1 answer:
never [62]3 years ago
6 0

Answer:

Step-by-step explanation:

Given that an  exit poll of 1000 randomly selected voters found that 515 favored measure A.

Sample proportion p = \frac{515}{1000} =0.515

q=1-0.515 =0.485\\n =1000\\SE = \sqrt{\frac{pq}{n} } \\=0.158\\

Margin of error 99% = 2.58*SE

=2.58*0.0158\\=0.0408

99% confidence interval =(0.515-0.0408, 0.515+0.0408)\\= (0.474, 0.556)

------------------------

H_0: p =0.5\\H_a: p >0.5\\

(Right tailed test)

STd error = \sqrt{\frac{0.5*0.5}{1000} } \\=0.0158

Test statistic Z = p diff/std error =\frac{0.015}{0.0158} \\\\=0.9487

p value = 0.1714

You might be interested in
What is the length of the rectangle?
gregori [183]

Step-by-step explanation:

area \: of \: rectangle \:  = 60 \:  {yards}^{2}  \\  \therefore \: (w + 4) \times \: w = 60\\  \\  \therefore \:  {w}^{2}  + 4w -60 = 0 \\  \\  \therefore \: {w}^{2}  + 10w - 6w -60 = 0 \\  \\   \therefore \: w({w} + 10) - 6(w  + 10)= 0 \\  \\  \therefore \: ({w} + 10) (w- 6)= 0 \\ \therefore \: {w} + 10 = 0 \: or \: w- 6 = 0 \\  \therefore \: {w}   = -  10  \: or \: w =  6  \\  \because \: sides \: of \: rectangle \: cant \: be \: negative \\  \therefore \: w \neq \:    - 10 \\  \\ \therefore \: w = 6 \\  \\ \therefore \: w + 4 = 6 + 4 = 10 \\  \\ length \: of \: rectangle \:  = 10 \: yards.

4 0
3 years ago
What is the range of g?​
Simora [160]
D because your x value is 6
6 0
2 years ago
Read 2 more answers
Covert this repeating decimal into a fraction ANSWER CHOICES 4936/990, 530/900,674/990,8099/990
mamaluj [8]
If you divide 530/900 in a calculator you would get 0.58 repeating then ending in a 9
7 0
2 years ago
Plese help me! this is worth 25 points dont get it wrong :(
lawyer [7]

Answer:

u forgot to put up a picture :(

8 0
3 years ago
Determine the axis of symmetry for the function f(x) = 5(x + 1)2 − 8.
aliina [53]

Answer:

C. x=-1

Step-by-step explanation:

We have been given a function formula f(x)=5(x+1)^2-8. We are asked to find the axis of symmetry for the given function.

We can see that our given function is a parabola in vertex form. We know that vertex from of parabola is y=a(x-h)^2+k, where (h,k) represents vertex of parabola.

Let us convert our given function in vertex form as:

f(x)=5(x-(-1))^2-8

We know that axis of symmetry of a parabola is the equation of x-coordinate of vertex, which in form x=h.

Since the x-coordinate of vertex is -1, therefore, the axis of symmetry for the given function would be x=-1.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Morganville and Newton are 45 miles apart. On a map, the two cities are 3 inches apart. What is the map scale?
    12·1 answer
  • Find the balance in the account to the nearest whole dollar:
    9·1 answer
  • Find the angle of elevation from the point on the ground 90 feet from the base of a building that is 200 feet tall
    5·2 answers
  • Make g the Subject of the formula 3e + 4g = 7 + 9eg
    13·1 answer
  • In the figure which pair of segments appear to be parallel
    9·2 answers
  • Which quotient is greater than 3?<br><br> 42 ÷ 19<br> 40 ÷ 18<br> 38 ÷ 14<br> 36 ÷ 11
    14·1 answer
  • Item 2<br> Write the word sentence as an equation.<br><br> A number m<br> increased by 5 is 7.
    7·2 answers
  • What is the value of ( 7 plus 2 cubed) x 9
    13·2 answers
  • The diagram represents a dilation with a center at P. If the scale factor of e dilation is K, which statement about the diagram
    9·1 answer
  • 6x18 - 18x12 + 36x15
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!