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
Furkat [3]
3 years ago
9

(20 points) A random sample of =1200 n = 1200 registered voters and found that 620 would vote for the Republican candidate in a

state senate race. Let p represent the proportion of registered voters who would vote for the Republican candidate. Consider testing 0:=.50 H 0 : p = .50 :>.50 H a : p > .50 (a) The test statistic is z =
Mathematics
1 answer:
LenaWriter [7]3 years ago
4 0

Answer:

The test statistic is Z = 1.157

Step-by-step explanation:

Given that:

The sample size n = 1200

The sample proportion of those that will vote for the Republican candidate is represented by \hat p = \dfrac{x}{n}

\hat p = \dfrac{620}{1200}

\hat p =0.5167

The null and the alternative hypothesis can be computed as:

H_o: P=0.50 \\ \\ H_a :P>0.50

The formula for the one-sample Z-test for the population proportion can be expressed as:

Z = \dfrac{\hat p - P_o}{\sqrt{\dfrac{P_o(1-P_o)}{n}}}

Z = \dfrac{0.5167 - 0.5}{\sqrt{\dfrac{0.5(1-0.5)}{1200}}}

Z = \dfrac{0.0167}{\sqrt{\dfrac{0.5(0.5)}{1200}}}

Z = \dfrac{0.0167}{\sqrt{\dfrac{0.25}{1200}}}

Z = \dfrac{0.0167}{\sqrt{2.08333333\times10^{-4}}}

Z = 1.157

You might be interested in
BRAINLIESTT ASAP! PLEASE HELP ME :)
Rainbow [258]

Answer:

C

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
Determine the domain of the function h(x)= 8x/x(x^2-81)
Alik [6]
H(x) = (8x)/x(x^2 - 81)
hx = 2^3(x^2 - 81)
hx = 2^3 • x^2 - 2^3 • 81
5 0
4 years ago
Leo has 1 1/3 cups of sugar. He uses 34 cups of sugar in a recipe. How much sugar does Leo have left?
Olenka [21]
32.6 cups is left because we will subtract 34 to 1 1/3
4 0
3 years ago
Add (7х2 – 3x) + (5х – 6).
Masja [62]

Option C: The solution is 7x^{2} +2x-6

Explanation:

The given expression is (7x^{2} -3x)+(5x-6)

We need to solution of the given expression.

The solution of the given expression can be determined by adding the two expressions.

Let us remove the parenthesis.

Thus, we have,

7x^{2} -3x+5x-6

Adding the like terms, we have,

7x^{2} +2x-6

Thus, the solution is 7x^{2} +2x-6

Hence, Option C is the correct answer.

5 0
3 years ago
PLEASE HELP URGENT DUE IN 2 HOURS
Kaylis [27]

Answer:

look it up on slader.com thats the sams problem that i have had before and it worked on slader.

8 0
3 years ago
Other questions:
  • A store’s supply/demand graph for ceiling fans is shown above. If the price is at the equilibrium point, how much money will the
    9·1 answer
  • A boy wins a carnial games 50% of the time. He uses a spinnser with equal-sized sections labeled 0 - 9 to simulate trials of the
    9·2 answers
  • A machine that cost £35,000 is operated 8 hours a day in a 5-day week but one hour each day is used for test purposes. For use o
    13·1 answer
  • Please help me I give brainliest when I can
    5·2 answers
  • Solve 19x - z = y for x.
    15·1 answer
  • HEYYY PLZ HELP ME BESTIES TYSM ILY
    5·1 answer
  • A shelf can hold 32 pounds of fruit. Each basket weighs 32 ounces. How many baskets can the shelf hold?
    8·1 answer
  • Find a equation of a line that is perpendicular to y=-4x+3 and passes through the point (4,-1)
    8·1 answer
  • A wave is traveling with a speed of 500 m/sec and has a wavelength of 10 m. Determine its frequency.
    15·2 answers
  • What is the Volume of the box 385 cubes?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!