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
katrin2010 [14]
3 years ago
8

The company Drug Test Success provides a "1-Panel-THC" test for marihuana usage. Among 300 tested subjects, results from 27 subj

ects were wrong (either a false positive or a false negative.) Use a 0.05 significance level to test the claim that less than 10% of the test results are wrong
Mathematics
1 answer:
Sindrei [870]3 years ago
6 0

Answer:

There is evidence for the claim that less than 10% of the test results are wrong

Step-by-step explanation:

Given that the company Drug Test Success provides a "1-Panel-THC" test for marihuana usage.

Among 300 tested subjects, results from 27 subjects were wrong (either a false positive or a false negative.)

Sample proportion = \frac{27}{300} \\=0.09

H0: p = 0.10

Ha: p <0.10

(left tailed test)

p difference = 0.09-0.10 = -0.01

Std error = \sqrt{0.1*0.9/300} \\=0.005196

z statistic = -1.9245

p value = 0.027

Since p <0.05 we reject H0

There is evidence for the claim that less than 10% of the test results are wrong

You might be interested in
Heya!
dimulka [17.4K]

Answer:

the answer is in last picture

6 0
3 years ago
Read 2 more answers
Please help, a major part of my grade.
omeli [17]

Answer:

Password for the journal of my friends are here for you do you want to be when I I don't think know have

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
5. The width of a row of identical townhouses,
Serjik [45]

Answer:

a. The value of the constant k is 21

b. The equation is y = k * x, where k is the proportionality constant, "x" is the number of terraced houses and "y" is the width of a row of identical houses.

Step-by-step explanation:

a.

<em>A proportional relationship satisfies the equation y = k * x, where k is a positive constant and is called a proportionality constant. In this case "x" is the number of terraced houses and "y" is the width of a row of identical houses. </em>

The data you have is that the width of 5 townhouses are 105 feet. This means that the value of "x" is 5 houses and the value of "y" is 105 feet. By replacing in the equation y = k * x and isolating the constant k, you get:

<em>105=k*5 </em>

k=\frac{105}{5}

<em>k=21 </em>

<u><em>So the value of the constant k is 21.</em></u>

b.

<em>As mentioned, the equation is y = k * x, where k is the proportionality constant, "x" is the number of terraced houses and "y" is the width of a row of identical houses.</em>

This means that just as "x" increases, "y" increases. And that if "x" decreases, "y" will decrease. And this relationship between "x" e "and" will always be the same, determined by the value of the constant "k".

7 0
3 years ago
The sum of 30 times (1-3)^(n-1) from n=1 to infinity
kati45 [8]

I can’t do it rn so just dm me later

7 0
3 years ago
Aaron bought 7/8 of a yard of fabric and it cost him $4.10. What does a full yard cost?
gayaneshka [121]
Divide 4.10 by 7 to get about 0.59 (round up because you can't get part of a penny) and that gives you 1/8 of a yard's price. Then multiply that by 8 to get a full yard for $4.72.

7 0
3 years ago
Other questions:
  • Draw a bar model that shows a pen is 4 times as long as an eraser that is 1 1/3 inches long.
    7·1 answer
  • 4 times the sum of a number and 5 is 1 less than the same number
    8·1 answer
  • If a student is selected at random, find the
    11·1 answer
  • In a sample of nequals16 lichen​ specimens, the researchers found the mean and standard deviation of the amount of the radioacti
    8·1 answer
  • In a recent year, person A and person B had two concert tours, and together they generated $191.3 million in ticket sales. If pe
    12·1 answer
  • If -10x – 9y = -7 is a true equation, what would be the value of<br> -30x – 27y?
    14·1 answer
  • What is the value of r in the equation −43r−1=−2 ?
    14·1 answer
  • WRITE your SOLUTION: Alivia has 42 apps on her phone, and she buys 3
    10·1 answer
  • I do not know how to do this​
    12·1 answer
  • I will Award Brainlist !! please Help its geometry ! :D
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!