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
erastovalidia [21]
4 years ago
14

Suppose the population of ages of all seven members of a tutoring service are: 22,17,19,21,20,19,24 A random sample of 3 members

was taken and the ages were: 17,19,21. Determine the sampling error to 2 decimal places if this sample was used to estimate the population mean age.
Mathematics
1 answer:
love history [14]4 years ago
7 0

Answer:

6.36%

Step-by-step explanation:

What we should do is calculate the mean value when we have all the data and then calculate the mean with the random samples, and calculate the error.

First, average of all data:

(22 + 17 + 19 + 21 + 20 + 19 + 24) / 7 = 20.29

Average for the random sample:

(17 + 19 + 21) / 3 = 19

% error = | sample - all / all | * 100

replacing the values:

% error = | (19 - 20.29) /20.29 | * 100

% error = 6.36%

You might be interested in
A car rental agency rents 200 cars per day at a rate of $30 per day. for each $1 increase in rate, 5 fewer cars are rented. at w
saul85 [17]
The rate should be $35. The agency would be able to rent 175 cars. The maximum income= 35 * 175 = $6125
5 0
4 years ago
the weight of an elephant is 10 to the 3rd times the weight of a cat if the elephant weighs 14000 pounds how much does the cat w
Andreyy89
Wouldn't you just divide 14000 by 10^3
6 0
3 years ago
Olivia is making lunch. She uses 1 3/8 pounds of carrots in soup. She uses 4/5 pound of carrots in a salad. About how many pound
cestrela7 [59]

Answer:

2 7/40 Carrots

About 2 Carrots

1 3/8+4/5 = 1 15/40+32/40 = 1 47/40 = 2 7/40

3 0
3 years ago
apply the distributive property to factor out the greatest common factor for 9+12n I need an expression too
svlad2 [7]

Answer:

3(3+4n)

Step-by-step explanation:

5 0
4 years ago
dakota earned money mowing laws this summer. she put 80% of the money in savings she then spends 25% of the remaining money on m
lawyer [7]

She spent 25% and had $99 left.

$99 is 75% of the remaining money.

Divide to find the total remaining

99 / 0.75 = $132

Now she put 80% of her total earnings in the bank, this means the remaining amount is 20%.

Divide the remaining amount by 20%:

132 / 0.20 = $660

She earned $660 total.

8 0
4 years ago
Other questions:
  • Danielle earns a 7.25% commission on everything she sells at the electronics store where she works.She also earns a base salary
    11·1 answer
  • "A recipe calls for 2 eggs every 5 cups of flour. A local chef will use 35 cups of flour, how many eggs must he have?"
    9·2 answers
  • During a science experiment, the temperature of a certain substance was recorded at three different times. Use this information
    6·1 answer
  • Evaluate 12 p divided by q plus 4 left parenthesis r minus 9 right parenthesis for pequals5​, qequals6​, and requals16. Use a pe
    13·1 answer
  • Will give 15 points! Please help!
    11·2 answers
  • You buy a shirt at Kohl’s that costs 27.50 but it’s 20% off. How much is the new price of the shirt
    15·2 answers
  • (03.01)
    8·2 answers
  • I’m kinda confused ab this one-
    15·1 answer
  • If x = 8 units, y = 3 units, and h = 2 units, then what is the area
    6·1 answer
  • Your friend Alex has won a scholarship to study abroad. (Congratulations!) Alex has only 8 weeks to earn enough money to buy a p
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!