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
V125BC [204]
3 years ago
13

Suppose you are interested in determining if the average amount of money that students spend on food at your university per day

is greater than $30. You randomly choose 25 students from your campus and calculate that the mean amount of money spent per day is $18.01 with a standard deviation of $2.22. What is the standard error of the mean?
Mathematics
1 answer:
aivan3 [116]3 years ago
6 0

Answer:

<u>The standard error of the mean is 0.444</u>

Step-by-step explanation:

1. Let's review the information given to us for solving the question:

Size of the sample = 25

Mean amount of money spent per day = US$ 18.01

Standard deviation  =  US$ 2.22

2. For finding the standard error of the mean, we use the following formula:

Standard error = Standard deviation / √Size of the sample

Standard error = 2.22 / √25

Standard error = 2.22 / 5

<u>Standard error = 0.444</u>

3. Interpretation of the standard error:

The standard error is "the standard deviation of the population of values of a sample statistic in a repeated sampling or its estimate".

Thus, the potential for error in the reported result is not more than ± 0.444 (68% confidence) or no more than 1.96 times the standard error (0.444) = ± 0.87 (at 95% confidence).

You might be interested in
Find the value of 7×+2y when x=2and y=-9
jeka94
The answer should be -4,
7x2=14
2x-9=-18
14+ -18= -4
6 0
3 years ago
4 1/4 - 3 3/4 is you get this you will have 11 points ​
jonny [76]

Answer:Exact Form: 1/2

Step-by-step explanation:

7 0
2 years ago
Which expression represents the composition f(g(h(x))) for the functions below? f(x) = 2x + 1 g(x) = 4x2 h(x) = x2 4x4 8x4 + 1 8
Yuri [45]
H(x)=x²
g(h(x))=4(x²)²=4x^4
f(g(h(x)))=2(4x^4)+1=8x^4+1
B is the answer. 
4 0
3 years ago
2 = x-3, then x equals
spayn [35]

Answer:

x = 5

Step-by-step explanation:

2 = x-3

<em>Adding 3 to both sides</em>

2+3 = x

5 = x

<u><em>OR </em></u>

x = 5

4 0
3 years ago
Read 2 more answers
Please help, I'm so confused​
kondaur [170]

Answer:

675

Step-by-step explanation:

use the legend under the map

4 0
3 years ago
Read 2 more answers
Other questions:
  • A company borrows $70,500 for 3 years at a simple interest of 6.5% to buy trucks. Find the total amount paid on the loan
    9·1 answer
  • The length of a rectangle is 2 inches more than the width. The perimeter is 24 inches. Find the length and width
    6·1 answer
  • What is the slope of a line that<br> contains the points (4, 3) and (-1, -4)?
    15·1 answer
  • Which of the following is a conjugate for 7 + iSquare root of 2? a. − 7 + iSquare root of 2
    13·1 answer
  • What is the value of x?
    6·2 answers
  • Joshua and 23 friends earned a total of $864 working during the summer.They each earned the same amount.How much did each person
    7·1 answer
  • PARTTTTTTTTTTTT 2 PLEASEEEEEE
    12·1 answer
  • Hey guys can yall please help me out?
    9·1 answer
  • (2x - 5) (x^2 + x - 2) =
    11·1 answer
  • Advanced Mathematical Decision Making..... <br> The height is ____<br> the distance is_____
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!