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
tatiyna
3 years ago
6

The manufacturer claims the mean bursting pressure for a certain type and size of PVC irrigation pipe to be at least 350 psi. A

sample of 10 such pipes were experimentally determined to have the following bursting pressures: 401 359 383 427 414 415 389 463 394 428 State the null and alternative hypotheses:
Mathematics
1 answer:
Lana71 [14]3 years ago
4 0

Answer:

H0 : μ ≥ 350

H1 : μ < 350

Step-by-step explanation:

It is claimed that the mean is atleast 350 psi ;

10 such pipes were experimentally sampled ;

Here, the null hypothesis is the claim ; this means that the alternative hypothesis will be the opposite of the claim.

The hypothesis

H0 : μ ≥ 350

H1 : μ < 350

You might be interested in
Elise is making punch for the party that requires 2 parts of fruit juice for every 5 parts of ginger ale. To make the punch, she
dalvyx [7]

Given:

Elise is making punch for the party that requires 2 parts of fruit juice for every 5 parts of ginger ale.

To make the punch, she uses 18 ounces of fruit juice and 3 containers of ginger ale.

To find:

The number of ounces in each container of ginger ale.

Solution:

Let n be the number of ounces in each container of ginger ale.

According to the question, the ratio of fruit juice and ginger ale is 2:5. it means,

\dfrac{\text{Fruit juice}}{\text{Ginger}}=\dfrac{2}{5}

\dfrac{18}{\text{Ginger}}=\dfrac{2}{5}

5\times 18=2\times \text{Ginger}

90=2\times \text{Ginger}

Divide both sides by 2.

45=\text{Ginger}

So, ginger required for punch is 45 ounces.

Number of containers = 3

Number of ounces in each container of ginger ale = n

Number of ounces in 3 containers of ginger ale = 3n

Now,

3n=45

Divide both sides by 3.

n=15

Therefore, 15 ounces are in each container of ginger ale.

6 0
3 years ago
Answer my questions IM FAILING MATH AND NO OKES HELPING ME
Molodets [167]

Answer:

Hi!

Around 2208.97 dollars

Step-by-step explanation:

A=P(1+r/n)^nt This is the compound interest rate equation.

According to the problem, Principal is 2000 with annual rate of 2.5%, it was being compounded semiannually(twice a year).

Thus,

P=2000.  r/n=2.5%/2 nt=2*4, 8

A=2000(1+0.0125)^8

A=2208.97

8 0
3 years ago
Read 2 more answers
The results of a survey of common allergies was
Westkost [7]

Answer: how many people are not allergic to any of the three choices? 22

How many people are allergic to all three choices? 1

How many people are allergic to both dogs and cats but not allergic to pollen? 7

How many people are allergic to cats only? 18

Step-by-step explanation: i took one for the team

7 0
4 years ago
A research team at Cornell University conducted a study showing that approximately 10% of all businessmen who wear ties wear the
LenKa [72]

Answer:

a) The probability that at least 5 ties are too tight is P=0.0432.

b) The probability that at most 12 ties are too tight is P=1.

Step-by-step explanation:

In this problem, we could represent the proabilities of this events with the Binomial distirbution, with parameter p=0.1 and sample size n=20.

a) We can express the probability that at least 5 ties are too tight as:

P(x\geq5)=1-\sum\limits^4_{k=0} {\frac{n!}{k!(n-k)!} p^k(1-p)^{n-k}}\\\\P(x\geq5)=1-(0.1216+0.2702+0.2852+0.1901+0.0898)\\\\P(x\geq5)=1-0.9568=0.0432

The probability that at least 5 ties are too tight is P=0.0432.

a) We can express the probability that at most 12 ties are too tight as:

P(x\leq 12)=\sum\limits^{12}_{k=0} {\frac{n!}{k!(n-k)!} p^k(1-p)^{n-k}}\\\\P(x\leq 12)=0.1216+0.2702+0.2852+0.1901+0.0898+0.0319+0.0089+0.0020+0.0004+0.0001+0.0000+0.0000+0.0000\\\\P(x\leq 12)=1

The probability that at most 12 ties are too tight is P=1.

5 0
3 years ago
write an algebraic expression for each verbal expression... 1. the sum of a number and ten 2. 15 less than k 3.the product of 18
erica [24]

Answer:

Step-by-step explanation:

N+10

K-15

18*2

6+(2*m)

3*n+8

(5*n)-17

2+(y^2)

(G^4)-9

7 0
3 years ago
Other questions:
  • A marathon runner will donate $5000 to charity if her time is less than or equal to 3 hours. She will donate $2000 if her time i
    9·1 answer
  • Y=1/5x+3 what is the graphing for this problem
    13·1 answer
  • SeeClear Windows makes windows for use in homes and commercial buildings. The standards for glass thickness call for the glass t
    7·1 answer
  • What is the equation of this line in slope-intercept form?
    15·1 answer
  • What is the value of cos(120°)
    7·2 answers
  • Help me answer this pls
    14·2 answers
  • Jill’s bowling scores are approximately normally distributed with mean 170 and standard deviation 20, while Jack’s scores are ap
    6·1 answer
  • A coral reef grows 0.13 m every week. How much does it grow in 15 weeks? Write your answer in centimeters
    11·2 answers
  • What is the y- intercept of the given graph​
    15·1 answer
  • A triangle's side lengths are 15 cm and 10 cm. Write an inequality to determinte the possible measure for the missing side lengt
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!