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
wariber [46]
4 years ago
11

A research company claims that no more than 55% of Americans regularly watch FOX News. You decide to test this claim and ask a r

andom sample of 425 Americans if they watch this network regularly. Of the 425 sampled, 255 respond yes. Calculate the test statistic for the hypothesis test.
Mathematics
1 answer:
7nadin3 [17]4 years ago
4 0

Answer: z(e) = 2.07

Step-by-step explanation:

1.-The problem is about a test of proportions. As research company claims than no more 55 % of Americans regularly watch Fox News

The null hypothesis is  H₀       P₀ ≤ 0.55       from 55%

And the alternative hypothesis is  Hₐ      Pₐ > .55

Is one tail test

2.-We have to specify significance level we assume our test will be for a significance level α = 5%  or α = 0,05

3.-Calculation of z (c) = ??  and z (e) = '??

For z (c) we find in z table the value of  z(c) = 1.64

For z (e) = ( P -P₀)/√p₀q₀/n     z(e) = 0.05 / √(0.55*0,45)/425                         z(e) = 0,05/ 0.02413    z(e) = 2.07

z(e) > z(c)  threfore z(e) is in the rejection zone . We reject null hyothesis

You might be interested in
Help fast pls
Goshia [24]

Answer:

The function is polynomial with the following characteristics

Degree: 5 and leading coefficient: -13.

Step-by-step explanation:

You can see the explanation in the image.

I will like to mention that the question is a little obscure, and the explanation applies for the following function:

f(x) = -13x^{5} -4x^{4} -1

You always have to choose the highest power of x, in order to find the leading term.

6 0
3 years ago
PLEASE HELP WILL GIVE FULL PONITS! 3. Using the known angle, what side is known? What side is unknown? Use opposite, adjacent, o
Artyom0805 [142]

Answer:

The trigonometric ratio that I would use to find the distance from the base of the tower to the keys is the tangent; tan (86°) = height / distance.

Step-by-step explanation:

You can draw a right triangle with angle 86°, opposite leg equal to the height (50 meter) and adjacent leg equal to the distance from the base of the tower to the keys: tan (86°) = 50 m / x

=> x = 50 m / tan(86°)

x = 50 m / 14.30 = 0.98 m

4 0
3 years ago
A rope 5 meters long was cut into 7 equal parts. What is the length of each part?
LekaFEV [45]

Answer:

5/7 meters

Step-by-step explanation:

Take the 5 meters and divide into 7 parts

5/7 = 5/7 meters

8 0
3 years ago
Read 2 more answers
A certain group of test subjects had pulse rates with a mean of beats per minute and a standard deviation of beats per minute. U
Lisa [10]

Answer: is this it?

Step-by-step explanation:

5 0
1 year ago
Factor x^2-10x+25,please show work
Papessa [141]
This is relatively easy because that 25 is a perfect square, whose (square) roots are 5 and -5.  x^2-10x+25 = (x - 5)(x - 5).  Note how (-5)(-5) = +25, and how -5x - 5x = -10x.

The roots are { (x-5), (x-5) }.
5 0
4 years ago
Other questions:
  • Use numbers 3 7 6 1 2 and write a expression that simplifies to 45
    10·1 answer
  • Similar Triangles, really need help on this one tried to do it but I don't understand it please help.
    9·1 answer
  • Julio is paid 1.4 times his normal hourly rate for each hour he works over 32 hours in a week. Last week he worked 43 hours and
    10·1 answer
  • What is one result of meiosis?
    12·2 answers
  • how much water should be mixed with 6 gallons of 55% solution of sulfuric acid to make a 20% solution of sulfuric acid
    5·1 answer
  • The probability of winning a game is 40%. How many times should you expect to win if you play each number of times? 5 times
    15·1 answer
  • Suppose you invest a certain amount of money in account that earns 3% annual interest. You also invest that same amount + $2000
    9·1 answer
  • For which inequality is x = 5 a solution?
    11·1 answer
  • En 4 días un hombre recorrió 120 km. Si cada día avanzó 1/3 de lo que anduvo el día anterior, en el segundo día recorrió.
    8·1 answer
  • A company that advertises on websites uses the formula below to estimate the number of people who will click on one of its adver
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!