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
IRISSAK [1]
2 years ago
14

The owner of a local golf course wants to determine the average age of the golfers that play on the course in relation to the av

erage age in the area. According to the most recent census, the town has an average age of 21.29. In a random sample of 30 golfers that visited his course, the sample mean was 39.723 and the standard deviation was 8.0282. Using this information, the owner calculated the confidence interval of (35.683, 43.763) with a confidence level of 99%. Which of the following statements is the best conclusion?
a. We are 99% confident that the average age of all golfers that play on the golf course is greater than 21.29
b. We are 99% confident that the average age of all golfers that play on the golf course is less than 21.29
c. We cannot determine the proper interpretation based on the information given.
d. The average age of all golfers does not significantly differ from 21.29.
e. The percentage of golfers with an age greater than 21.29 is 99%.
Mathematics
1 answer:
irakobra [83]2 years ago
8 0

Answer:

a. We are 99% confident that the average age of all golfers that play on the golf course is greater than 21.29

Step-by-step explanation:

x% confidence interval:

A confidence interval is built from a sample, has bounds a and b, and has a confidence level of x%. It means that we are x% confident that the population mean is between a and b.

In this question:

99% confidence interval for the average age of golfers that play on the area is (35.683, 43.763), which means that we are 99% confident that the mean age of all golfers who play in the area is a value in this interval, and the best conclusion is given by option A, as the lower bound of the interval is greater than 21.

You might be interested in
Movie tickets are $4 for regular admission and $3 for seniors. On a night where there were 190 people and total sales of $720 ho
labwork [276]
Answer is B: 150

write two equations

r+s=190
4r+3s=720

solve by substitution

the get r=150 s=40
8 0
3 years ago
Read 2 more answers
Perimeter of a square painting is 216 centimeters. How long is each side?
RUDIKE [14]
Perimeter is the addition of all 4 sides and a square as all the same sides. so every side will be the same. so if you divide 216 by 4 you get 54. you can check this by adding 54+54+54+54=216 or 54x4=216
8 0
2 years ago
Ken started saving for retirement at age 35 with plans to retire at age 70. He invested an average of $600 per month in various
Irina-Kira [14]
The answer is C $499,355.18
8 0
3 years ago
Read 2 more answers
SOMEONE PLEASE HELP! A survey of a group of seventh graders and a group of teachers at a local middle school asked how many sibl
erastovalidia [21]

<em>Note: You may have missed to add the dot plots chart, so I found the chart after a little research and hence, I am attaching it and based on that dot plot chart I am solving the question which anyways would clear you concept.</em>

Answer:

''The median for the students is 2 and the median for the teachers is 3'' is the right option which compares the medians of the data.

Step-by-step explanation:

Data for students from the dot plot in order

0,\:0,\:1,\:1,\:1,\:1,\:2,\:2,\:2,\:2,\:2,\:2,\:2,\:3,\:3,\:3,\:3,\:3,\:4,\:4

Calculating Median for students:

0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4

As you can see, we do not have just one middle number but we have a pair of middle numbers i.e. 2 and 2, so the median is the average of these two numbers:

Median = (2+2)/2

            =4/2

            = 2

Data for teachers from the dot plot in order

0, 1, 1, 1, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 6, 8

Calculating Median for teachers:

0, 1, 1, 1, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 6, 8

As you can see, we do not have just one middle number but we have a pair of middle numbers i.e. 3 and 3, so the median is the average of these two numbers:

Median = (3+3)/2

            =6/2

            = 3

Therefore, ''the median for the students is 2 and the median for the teachers is 3'' is the right option which compares the medians of the data.

8 0
3 years ago
Read 2 more answers
Evaluate the expression
nevsk [136]

Simplifying
-16 + 23 (-4) + -3
Multiply 23 x -4
Add -16 + -92=-108
Add -108-3= -111 <------Answer
8 0
3 years ago
Read 2 more answers
Other questions:
  • What is m∠D ?<br><br> Enter your answer in the box. __°
    7·2 answers
  • Abel cycled a total distance of 2 and 1 over 2 miles during the months of March and April. If Abel only cycled 1 over 8 of a mil
    9·2 answers
  • Which of the following expressions are equivalent to 4x-6+8x+2
    10·2 answers
  • A fence post is 12 feet tall. A chain is attached to the top of the fence post and fastened to the ground 9 feet from the base o
    7·2 answers
  • Find f(-4) if f(x) =-x-5.
    14·2 answers
  • -7+(63/9) Evaluate the Following Expression
    6·1 answer
  • SOLVE PLS HURRY PLS INCLUDE STEPS 4a + 1 - a = 19
    14·1 answer
  • PLEASE HELP ASAP I NEED THIS LIKE RIGHT NOW NO LINKS OR WILL BE REPORTED! SHOW ALL OF YOUR WORK! 3. The area of the square rug i
    13·1 answer
  • Help me please please help me please thank you
    7·1 answer
  • Using the table, if there are 5 flowers, how many petals are there?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!