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
Allushta [10]
3 years ago
15

Management of a particular golf course wants to know what the average score is for their course. It is known that from previous

games that the standard deviation of the golf scores is 4.5. To estimate the average score, the managers took a random sample of 50 golfers and found that it has a mean of 70, Use a 95% confidence interval (CI) to estimate the true average score of golfers on this particular course. a.70 (1.645)4.5/S0) O b. 701 ( 1 .96)(4.5) ? ?. 70 (1.96)(4.5 /V50) od. cannot compute
Mathematics
1 answer:
babunello [35]3 years ago
6 0

Answer: c. 70\pm (1.96)\dfrac{4.5}{\sqrt{50}}

Step-by-step explanation:

The confidence interval for population mean is given by :-

\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}

, where n= sample size

\overline{x} = sample mean.

z*= Critical value.

\sigma= population standard deviation.

As per given , we have

n= 50

\sigma=4.5

\overline{x}=70

Also, we know that the critical value for 95% confidence interval : z*= 1.96

Then, the 95% confidence interval (CI) to estimate the true average score of golfers on this particular course will be :

70\pm (1.96)\dfrac{4.5}{\sqrt{50}} (substitute all the value in the above formula.)

Hence, the correct option is c. 70\pm (1.96)\dfrac{4.5}{\sqrt{50}}

You might be interested in
If ∠G is supplementary to ∠H and the measure of ∠G is 65° what is the measure of ∠H?
Elina [12.6K]

Solution:

<u>Given:</u>

  • ∠G = 65°

Supplementary angles are a pair of angles that sum up to 180°.

<u>It should be noted:</u>

  • If ∠G and ∠H are a pair of supplementary angles, they both sum up to 180°.

Equation formed: ∠G + ∠H = 180

<u>Substitute the values into the equation.</u>

  • ∠G + ∠H = 180
  • => 65 + ∠H = 180

<u>Subtract 65 both sides.</u>

  • => 65 - 65 + ∠H = 180 - 65
  • => ∠H = 180 - 65 = 115°

7 0
2 years ago
Ally is making a scale diagram of her classroom. She uses a scale factor of 3 centimeters per foot to draw the diagram. The actu
Gnoma [55]
The area of the scale drawing would be 1080 square centimeters or (1080 cm^2). I got this answer through first finding the area of the classroom in feet (which is A= lw = [18][20] = 360 ft^2) and then I proceeded to converting it to centimeters via given scale factor (3 cm = 1 foot) and had the answer of 1080 centimeters squared.
7 0
3 years ago
Read 2 more answers
Evaluate 2.43+51.62+124.77
Damm [24]
2.43 + 1.62 + 124.77 = 178.82 Because all you have to do is add up all the numbers (Don't take the decimals out, leave them in) And then you get: 178.82.

Hope I helped!

- Amber
3 0
3 years ago
On the school playground, the slide is due west of the tire swing and due south of the monkey bars. If the distance between the
FinnZ [79.3K]

Answer:

Step-by-step explanation:

Draw a picture!

You get a right triangle with hypotenuse = 20 ft and horizontal leg = 12 ft

Use the Pythagorean Theorem to find the length of the vertical leg:

vertical leg = √(20²-12²) = √256 = 16 ft

5 0
3 years ago
How to explain to a homework helper how 5 groups help you see 6,7,8,9,10.?
12345 [234]
You could start out by saying u put 5 groups into each number
7 0
3 years ago
Read 2 more answers
Other questions:
  • Please could u help me !!!!
    5·1 answer
  • 9.042 divide 2.1 equqls what
    5·2 answers
  • Given f(x)=2x + 5 and g(x)=x^2 - 3<br><br> f(3)=<br> g(2)=<br> g(f(-1))=<br> f(g(-1))=<br> g(f(x))=
    10·1 answer
  • The whitish distance across the scale model of the planet Venus is 15 cm. The actual widest distance across Venus is approximate
    10·1 answer
  • Which of the following is a numerical expression?
    12·2 answers
  • A circular plate has a crack along the line AB, as shown below:
    14·2 answers
  • HELP ASAP I WILL GIVW YOU BRAINLIEST!!!!!!
    11·2 answers
  • Need help ASAP!<br> NO LINKS!putos<br> By the way thanks
    7·1 answer
  • Someone please help and choose correct answer
    14·1 answer
  • As you can see I NEED HELP RIGHT NOW!
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!