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
galina1969 [7]
3 years ago
15

In 2004, a survey on computer crime indicated that 7% of reported unauthorized uses of business Web sites came from inside the c

ompany. In a survey taken two years later, it was found that 7 of a sample of 163 reported unauthorized uses of business Web sites came from inside the company. a) Conduct an appropriate hypothesis test to check if the proportion of reported unauthorized uses of business Web sites that came from inside the company has changed since 2004. Use the significance level of 0.05. State your conclusion. (5 Points) b) Find the p-value of the test and confirm that the conclusion based on the p-value agrees with the conclusion in part (a). (2 Points)
Mathematics
1 answer:
masya89 [10]3 years ago
8 0

Answer:

a) H0 : P = 0.07

   Ha : P ≠ 0.07

b) p -value = 0.1770

Step-by-step explanation:

P = 7% = 0.07

x (result ) = 7 , n = 163

p = x / n = 7 / 163 = 0.043

<u>a) Using a significance level ( ∝ ) of 0.05, estimate the appropriate hypothesis</u>

H0 : P = 0.07

Ha : P ≠ 0.07

conduct a  Z- test statistic

Z = ( p - P ) / \sqrt{\frac{P(1-P)}{n} }

  = ( 0.043 - 0.07 ) / \sqrt{\frac{P(1-P)}{n} }  =  - 1.35

Critical value ( Z₀.₀₂₅ ) = ± 1.96

<em>we fail to reject H0 given that | z | < Zcritical because there is not enough evidence to conclude that proportion change</em>

<u>b) Determine the p-value of the test </u>

P-value = P ( | Z | > Z )

             = 2 * P ( Z < -1.35 )

             = 0.1770

The p-value ( 0.1770 ) > ∝ ( 0.05 ) hence we fail to reject H0 ( i.e. the conclusion agrees with part a above )

You might be interested in
Bill Jorden has a 48-month installment loan with a fixed monthly payment of
melomori [17]

Answer:

7500

Step-by-step explanation:

no interest will have to be paid

8 0
2 years ago
What is the distance between the points (-4, 8) and (10,-8)?
Leto [7]

Answer:

14 apart from each other.

5 0
2 years ago
Read 2 more answers
You purchase a burrito for $8.39 and a juice for $2.25. You pay for both items with a $10 bill and a $5 bill. Complete a verbal
Mandarinka [93]

Answer:

You will get $4.36 back.

Step-by-step explanation:

You have to total the cost of the food and drink.

8.39 + 2.25 = 10.64

You give your total money to the cashier to pay for your goods.

10 + 5 = 15

The cashier will give you the refund or change back.

15 - 10.64 = 4.36

3 0
3 years ago
In recent times, with mortgage rates at low levels, financial institutions have had to provide more customer convenience. One of
omeli [17]

Answer:

Step-by-step explanation:

Find attached the solution

6 0
2 years ago
a worker can complete the assembly of 15 chairs in 6 hours. At the rate,how many can the worker complete in a 40-hour work week?
san4es73 [151]

Answer:

ooo

Step-by-step explanation:

oooo

4 0
3 years ago
Other questions:
  • What function represents this arithmetic sequence? 32, 41, 50, . . .
    5·1 answer
  • the tax on a property with an assessed value of $120,000 is $300. find the tax on a property with an assessed value of $140,000.
    5·2 answers
  • Is the answer B or C
    8·1 answer
  • A pyramid has a square base with side s. The height of the pyramid is 2/3 that of its side. What is the expression for the volum
    13·2 answers
  • A penny and a nickel are tossed. Both are fair coins. Let X = 1 if the penny comes up heads, and let X = 0 otherwise. Let Y = 1
    10·1 answer
  • Jimmy has 42 minutes to get ready for
    10·1 answer
  • fish swims at an altitude of -20.2 meters. A bird flies at an altitude of 38.1 meters. Which of the following statements are tru
    15·1 answer
  • 2x-13x+15=0 nature of roots
    5·1 answer
  • If f(x) = 2/3x + 9, find f^-1(x)
    12·1 answer
  • The list 11, 20, 31, 51, 82 is an example of a list of five strictly positive integers
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!