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
shutvik [7]
2 years ago
12

100 points, I need help fast!

Mathematics
1 answer:
ivolga24 [154]2 years ago
4 0

a. The standard error is equal to the standard deviation divided by the square root of the sample size:

SE = (23 ppm)/√18 ≈ 5.42 ppm

b. The t statistic is given by the difference between the true and sample means, divided by the standard error:

t = (192 ppm - 180 ppm)/SE ≈ 2.21

c. The p-value is approximately 0.0204.

d. Since p < 0.05, the difference is significantly different, so we reject the null hypothesis.

e. A type I error might have occurred, since it's possible that the null hypothesis was true, but we ended up rejecting it.

You might be interested in
A piece of land is shaped like a right triangle. Two people start at the right angle at the same time, and walk at the same spee
sweet [91]

Answer:

1 m/s

Step-by-step explanation:

the area of the triangle = A = ¹/₂ab

where a is the distance covered by the first person and b is the distance covered by the second person. since they walk at the same speed, then a = b, so our formula can be changed to A = ¹/₂x²

now we find the derivative of both sides:

dA/dt = ¹/₂ ⋅ dx²/dt

dA/dt = ¹/₂ ⋅ 2x ⋅ dx/dt

dA/dt = x ⋅ dx/dt = x ⋅ velocity

we are told that x = 5 m, and dA/dt = 5 m²/s

velocity = dA/dt / x

velocity = 5 m²/s / 5 m = 1 m/s

7 0
4 years ago
There are 16 colored pencils and 8 colored pencils will fit in a box. How many boxes will the 16 pencils fill?
Gekata [30.6K]

Given:

Total number of colored pencils = 16

Colored pencils fit in a box = 8

To find:

The number of boxed that will fit the 16 pencils.

Solution:

According to the question 8 colored pencils will fit in a box. So, we have

8 pencils = 1 box

Multiply both sides by 2.

2×8 pencils = 2×1 box

16 pencils = 2 box

Therefore, 2 boxes are required to fit the 16 colored pencils.

4 0
3 years ago
Please help me I don’t understand
andrezito [222]

angle 5 and angle 4 are exterior angles

7 0
3 years ago
Helppp please I’ll give points to whoever answers it
sashaice [31]

Answer:

The solution is in the attached file

Step-by-step explanation:

Choose the examples you would like to use from the examples listed for both true and false

5 0
3 years ago
Multiply. Just multiply the decimals. Please?
Alex17521 [72]

1) 0.009

2) 0.294

3) 0.0612

4) 33.62

5) 26.46

6) 1.824

5 0
3 years ago
Read 2 more answers
Other questions:
  • The answers are <br> A.$21,013<br> B.$16,744<br> C.$16,731<br> D.$20,998
    5·1 answer
  • 740% as a decimal and as a mix number
    8·1 answer
  • RATIO HELP PLEASE
    12·1 answer
  • Sam wanted to find three consecutive even numbers that add up to 84. He wrote the equation k + (k + 2) + (k + 4) = 84. What does
    12·1 answer
  • Solve problem in photo 8th math
    9·2 answers
  • Helllllpppppppppp idk what it issssss
    15·1 answer
  • If you are 99 pounds, and you eat 1 pound nachos, are you 1 percent nachos?
    9·1 answer
  • A<br> 100 cm²<br> b<br> 9 cm²<br> c<br> 225 cm²<br> d<br> 28.26 cm²
    12·1 answer
  • What is the value of -2.4÷1.
    6·2 answers
  • Box A has a volume of 512 cubic meters. Box B is similar to box A. To create Box B, Box A's dimensions were divided by 2. What i
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!