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
grin007 [14]
3 years ago
6

An online survey company wants to know if customer age is important in deciding to subscribe. The company has gathered a random

sample of 1000 people from the population and asked each person whether he or she would subscribe to a service. Perform all the steps of a hypothesis test with a = 0.05 to determine whether or not an individual would subscribe to a service and age are independent.
Age
Under 18 18-34 35 and Over Total
Yes 120 262 237 619
No 41 103 237 381
Total 161 365 574 1000
Mathematics
1 answer:
aleksley [76]3 years ago
3 0

Answer:

service subscription and age are not independent

Step-by-step explanation:

The appropriate statistical test to adopt for the above problem is the Chisquare test.

The hypothesis :

H0 : service subscription and age are independent

H1 : service subscription and age are not independent

Observed values :

Under 18 18-34 35 and Over Total

Yes__ 120 __262 __237__ 619

No___ 41 ___103 __237 __381

Total 161 365 574 1000

χ² = (Observed - Expected)²/Expected

Expected Values:

99.659 __ 225.935 __ 293.406

61.341 ___ 139.065 __ 180.594

The Chisquare values :

4.15172__ 5.7569__ 10.8438

6.74518_ 9.35307 __ 17.6176

χ² = 4.15172 + 5.7569 + 10.8438 + 6.74518 + 9.35307 + 17.6176 = 54.46827

Degree of freedom = (row-1)*(column-1) = (2-1)*(3-1) = 1*2 = 2

Pvalue at df = 2 ; Pvalue = 0

α = 0.05

Pvalue < Α ; Hence, we reject H0 ; and conclude that service subscription and age are not independent

You might be interested in
What is the rate of change of the line on the graph below?
Whitepunk [10]
The rate of change on the line is x line goes to the right and y line goes upward
5 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=%5Cfrac%7B%5Csqrt%7Ba%2Bb%7D%20%7D%7B%5Csqrt%7Ba-b%7D%20%7D%20%2B%5Cfrac%7B%5Csqrt%7Ba-b%7D%20
andrezito [222]

Answer:

\frac{(a+b)}{a^{2} -b^{2}  } + \frac{(a-b)}{a^{2} -b^{2}  } = \frac{2a}{a^{2} -b^{2}  }

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Is 3x + 2x = 3 a function
worty [1.4K]

Answer:

You need to solve for Y. There should only be one corresponding y-value for that x-value. y = x + 1 is a function because Y is ALWAYS greater then X.

Step-by-step explanation:


5 0
3 years ago
Solve the inequality –1 &gt; –2(x – 4) – 5(4x – 7).
Ksivusya [100]

Answer:

x > 2

Step-by-step explanation:

–1 > –2(x – 4) – 5(4x – 7)

–1 > –2x  + 8 –20x + 35

–1 >  - 22x + 43

- 1 - 43 >  - 22x

- 44 >  - 22x

\frac{ - 44}{ - 22}   <   \frac{ - 22x}{ - 22}

2 < x

x > 2

5 0
3 years ago
if the local rate for electrical service is 6cents per kilowatt-hour how much money would be saved in a year by using a dishwash
dezoksy [38]

Given:

The local rate for electrical service is 6 cents per kilowatt-hour.

We need to know how much money would be saved in a year by using a dishwasher 4times per week rather than 6 times per week ​

From the table:

The cost of using a dishwasher 4 times per week = $29

The cost of using a dishwasher 6 times per week = $44

So, the saving will be = 44 - 29 = 15

So, the answer will be $15

3 0
1 year ago
Other questions:
  • Why can a fraction, a decimal, or a percent be written in equivalent forms?
    15·1 answer
  • A candle is 17 in. tall after burning for 3 hours. After 5 hours, it is 15 in. tall. Write a linear equation to model the relati
    13·1 answer
  • Lisa had 15 daisies.she gave away 7 daisies. then she found 3 more daisies. how many daisies lisa have now?
    8·1 answer
  • The height of a triangle is 2 less than 5 times its base. If the base of the triangle is x feet and the area of the triangle is
    7·1 answer
  • Will surveyed students at his school about whether they have ever gone snowboarding and whether they own a skateboard. He found
    15·2 answers
  • 0.68 = 0.6 + ___ = ____ x 0.1 + 8 x ____
    14·1 answer
  • If 8 7/18 - ( 1 5/6 + y) = 3 4/15 + 2 3/45<br> what is y?
    13·1 answer
  • Which function is equivalent to (x)=-7(x+4)2-1?
    14·1 answer
  • Adam earns $13.72 each hour that he works.He work 9 hours each week how much does adam earn each week
    13·1 answer
  • I need help plz..No spam​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!