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
sladkih [1.3K]
3 years ago
11

A store asked 250 of its customers whether or not they were satisfied with the service. The responses were also classified accor

ding to the gender of the customers. We want to study whether there is a relationship between satisfaction and gender.
Mathematics
1 answer:
mr_godi [17]3 years ago
3 0

Answer:There is no question included in this, it seems like a prompt.

Step-by-step explanation:

You might be interested in
AHH HELP IM A DUMB STUDENT
Alexus [3.1K]
46 cm.

do 102/17 and get 6. now take 6+6+17+17= 46 cm. that’s ur perimeter
8 0
3 years ago
A survey of 76 commercial airline flights of under 2 hours resulted in a sample average late time for a flight of 2.55 minutes.
nika2105 [10]

Answer:

The best point of estimate for the true mean is:

\hat \mu = \bar X = 2.55

2.55-1.96\frac{12}{\sqrt{76}}=-0.148    

2.55+1.96\frac{12}{\sqrt{76}}=5.248    

Since the time can't be negative a good approximation for the confidence interval would be (0,5.248) minutes. The interval are tellling to us that at 95% of confidence the average late time is lower than 5.248 minutes.

Step-by-step explanation:

Information given

\bar X=2.55 represent the sample mean for the late time for a flight

\mu population mean

\sigma=12 represent the population deviation

n=76 represent the sample size  

Confidence interval

The best point of estimate for the true mean is:

\hat \mu = \bar X = 2.55

The confidence interval for the true mean is given by:

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}   (1)

The Confidence level given is 0.95 or 95%, th significance would be \alpha=0.05 and \alpha/2 =0.025. If we look in the normal distribution a quantile that accumulates 0.025 of the area on each tail we got z_{\alpha/2}=1.96

Replacing we got:

2.55-1.96\frac{12}{\sqrt{76}}=-0.148    

2.55+1.96\frac{12}{\sqrt{76}}=5.248    

Since the time can't be negative a good approximation for the confidence interval would be (0,5.248) minutes. The interval are tellling to us that at 95% of confidence the average late time is lower than 5.248 minutes.

7 0
3 years ago
Complete the missing value in the solution to the equation −4x−y=24
Vedmedyk [2.9K]

Answer:

-4x-y=24= - 4 · (-7) - 4 = 24

 

6 0
3 years ago
Circle O is shown below. the diagram is not drawn to scale. 73°
zepelin [54]
Answer:
53.5

Explanation:
Since triangle AOB is an isosceles triangle (AO = OB), the base angles of the triangle are 53.5. (180-73 = 107, 107/2 = 53.5)
8 0
2 years ago
Read 2 more answers
Two pieces of equipment were purchased for a total of $4000. If one piece cost $850 more than
ruslelena [56]

The price of less expensive equipment is $1575.

Step-by-step explanation:

Let,

Price of one equipment = x

Price of other equipment = y

According to given statement;

x+y=4000   Eqn 1

x = y+850    Eqn 2

Putting Eqn 2 in Eqn 1

(y+850)+y=4000\\y+850+y=4000\\2y=4000-850\\2y=3150

Dividing both sides by 2;

\frac{2y}{2}=\frac{3150}{2}\\y=1575

Putting y=1575 in Eqn 2;

x=1575+850\\x=2425

The price of less expensive equipment is $1575.

Keywords: linear equation, substitution method

Learn more about linear equations at:

  • brainly.com/question/11343416
  • brainly.com/question/11416224

#LearnwithBrainly

3 0
3 years ago
Other questions:
  • What would '6 meters to 60 meters' be in a ratio
    10·1 answer
  • EASY NEED HELP<br><br> MATH QS
    7·2 answers
  • How many milliliters of 0.30%. sugar solution must you add to 75 mL of 4% sugar solution to get a 0.50% sugar solution? show you
    11·1 answer
  • The blue figure is translated _____ units ___ and ____ units ____ from the red figure.
    7·1 answer
  • In this system of equations, which variable would it be easiest to solve for? x + 3 y = 13. 3 x + 2 y = 25. The easiest to solve
    10·2 answers
  • 3 teachers for 63 students; 7 teachers for 147 students are they equivalent?
    7·1 answer
  • A mummy ordered 17 bones and 8 skulls for a total of 1964. bones or $1260
    5·1 answer
  • HELP QUICK PLEASE!
    9·1 answer
  • Ramon earns $1,690 each month and pays $53.60 on electricity. To the nearest tenth of a percent, what percent of Ramon's earning
    14·1 answer
  • The TSA and slanted height of cone are 374cm2 and 10cm respectively. Find radius​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!