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
xxTIMURxx [149]
3 years ago
13

Perchlorate is a chemical used in rocket fuel. People who live near a former rocket-testing site are concerned that perchlorate

is present in unsafe amounts in their drinking water. Drinking water is considered safe when the average level of perchlorate is 24.5 parts per billion (ppb) or less. A random sample of 28 water sources in this area produces a mean perchlorate measure of 25.3 ppb. Which of the following is an appropriate alternative hypothesis that addresses their concern?
A) H: 25.3.
B) H: > 25.3.
C) H u <24.5.
D) Hu> 24.5. 27.
Mathematics
1 answer:
ser-zykov [4K]3 years ago
8 0

Answer:

H_1 : \mu  > 24.5

Step-by-step explanation:

From the given information:

The sample size is 28

The population mean is 24.5 (ppb)

The sample mean is 225.3 (ppb)

Thus, the null and the alternative hypothesis can be computed as:

Null hypothesis:

H_o : \mu \le 24.5

Alternative hypothesis:

H_1 : \mu  > 24.5

You might be interested in
Is F=((x,y) | x+y=10 a function or a relation
asambeis [7]

that is a function man

7 0
3 years ago
Find the value of x in the triangle shown below.<br> 6<br> 10
Jobisdone [24]

Answer:

50

Step-by-step explanation:

The value of x is 50 degrees

bcoz it is isosceles triangle

so two angles are equal

so value of x is 50

I hope this will help u

3 0
2 years ago
Read 2 more answers
What is the volume of the cylinder below?
lisov135 [29]

Answer:

192π

Step-by-step explanation:

cylinder volume is base times height

2πr^2 = base = 64π

height = 3

64π*3 = 192π

5 0
2 years ago
I need the answer to this.​
Kamila [148]

Answer:

VERY HARD QUESTIONS SO I WILL TELL YOU LATER

4 0
2 years ago
HELPPP!! <br> Triangle ABC is similar to triangle MOP. A = 45 and P = 102. What is the measure of B?
erma4kov [3.2K]

Answer:

       \large\boxed{\large\boxed{33\º}}

Explanation:

The order of the letters naming the triangles is relevant. When it is said that <em>triangle ABC is similar to triangle MOP</em>, means that:

  • ∡A ≅ ∡M
  • ∡B ≅ ∡O
  • ∡C ≅ ∡P

Therefore:

  • ∡A = 45º (given)
  • ∡P = 102º (given)
  • ∡C = 102º (by substitution)

Now, you have two angles of triangle ABC and can find the third one:

  • ∡A + ∡B + ∡C = 180º
  • ∡B = 180º - ∡A - ∡B
  • ∡B = 180º - 45º - 102º = 33º ← answer

6 0
3 years ago
Other questions:
  • A company is offering 1 grand prize, 3 second place prizes and 25 third place prizes. Out of 500 total entries, what is the prob
    11·1 answer
  • Statements on perpendicular lines
    5·1 answer
  • This year, the winner of the New York Marathon ran the 8 kilometer event in 24 minutes. What is the runner’s unit rate?
    7·1 answer
  • How can you find the volume of this aquarium
    12·2 answers
  • Calculate the volume of a cylinder of height 7 cm and radius 4 cm (take π)​
    15·1 answer
  • Hellllp meeeee plzzzzz
    10·1 answer
  • 4 yd 2 ft = ______ ft
    7·1 answer
  • You and your best friend decide to go to dinner at Chickfila. You each
    14·1 answer
  • Show work please <br><br> A 18 <br> B 2<br> C 9 <br> D 1
    9·1 answer
  • I need help finding the slope​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!