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
Fantom [35]
3 years ago
10

Trials in an experiment with a polygraph include results that include cases of wrong results and cases of correct results. Use a

significance level to test the claim that such polygraph results are correct less than ​% of the time. Identify the null​ hypothesis, alternative​ hypothesis, test​ statistic, P-value, conclusion about the null​ hypothesis, and final conclusion that addresses the original claim. Use the​ P-value method. Use the normal distribution as an approximation of the binomial distribution.
Mathematics
1 answer:
hram777 [196]3 years ago
5 0

Answer and Step-by-step explanation:

This is a complete question

Trials in an experiment with a polygraph include 97 results that include 23 cases of wrong results and 74 cases of correct results. Use a 0.01 significance level to test the claim that such polygraph results are correct less than 80​% of the time. Identify the null​hypothesis, alternative​ hypothesis, test​ statistic, P-value, conclusion about the null​ hypothesis, and final conclusion that addresses the original claim. Use the​ P-value method. Use the normal distribution as an approximation of the binomial distribution.

The computation is shown below:

The null and alternative hypothesis is

H_0 : p = 0.80

Ha : p < 0.80

\hat p = \frac{x}{ n} \\\\= \frac{74}{97}

= 0.7629

Now Test statistic = z

= \hat p - P0 / [\sqrtP0 \times (1 - P0 ) / n]

= 0.7629 - 0.80 / [\sqrt(0.80 \times 0.20) / 97]

= -0.91

Now

P-value = 0.1804

\alpha = 0.01

P-value > \alpha

So, it is Fail to reject the null hypothesis.

There is ample evidence to demonstrate that less than 80 percent of the time reports that these polygraph findings are accurate.

You might be interested in
What is the area of this triangle
Julli [10]
By the looks of it the hieght is 7 and base is 6 so

A= 1/2(6)(7)
A= 1/2(42)
A= 21
4 0
3 years ago
Suppose you are finding 296 divided by 4 using partial quotients. Is 50 or 70 a more reasonable partial quotient? Explain.
Lyrx [107]
Round 296 up to 300 and then divide 300 by 4 mentally.  Answer:  75.  Which is a more reasonable partial quotient, 50 or 70?
8 0
3 years ago
The expression 21m−49n factored using the GCF
rewona [7]
Here is my work for the problem. Hope this helps!

5 0
3 years ago
Read 2 more answers
Kate has a rectangular garden that is 8 feet long by 3 feet wide. She wishes to extend the length and width by the same amount i
elena55 [62]
<span>Let the extension of the length and width be x.
 The new dimensions are: Length = 8+x
  Width =3+x
 Area = 104 ft squared
 Area of a rectangle = Length x Width
 Therefore,
(8+x)(3+x) = 104
 x^2 +11x +24=104
 x^2 +11x +24-104=0
 x^2 +11x-80=0

 Factorize using splitting the middle term method. X^2 +16x-5x-80=0 x(x+16)-5(x+16)=0 (x-5)(x+16)=0 either x-5 = 0 or x+16=0 x=5 or x=-16 length and width measure cannot be negative. Therefore, the extension of the length and width is 5 feet each.</span>
4 0
3 years ago
84102 - 1052=?<br><br><br>pasagot po pls with solution ​
lisov135 [29]

Answer:

83050

Step-by-step explanation:

that's the answer to the question

8 0
2 years ago
Other questions:
  • What is the slope of the line that contains the points (-3, 5) and (-5, 6)?
    11·2 answers
  • How many people are on earth ?
    9·1 answer
  • Solve the system using elimination: -3x - 3y = 12 -9x + 3y = -24<br><br>The answer is not (-1,-3)
    12·1 answer
  • Which ordered pair is a solution to the system?<br> x – 2y = –2<br> 3x – 2y = 2
    6·1 answer
  • Elizabeth bought a plant and planted it in a pot near a window in her house. Let H represent the height of the plant, in inches,
    9·2 answers
  • A school is building a rectangular stage for its chorus. The stage must have a width of 4 feet. The area of the stage must be at
    12·1 answer
  • Find the area of the shape shown below.<br> 4<br> 2<br> 6<br> 2<br> 2<br> units
    6·2 answers
  • What is the RANGE of this graph
    15·1 answer
  • Find x in the following figure
    13·2 answers
  • Donna is putting 9 books in a row on the bookshelf she will put one of the books gullivers travel in the first spot she will put
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!