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
5 students want ice cream, 7 want a movie, 10 want a custom, and the rest are undecided. If 20% want ice cream how many students
Nataly [62]
There are 25 in the class
8 0
3 years ago
Will give brainliest if you get this right!
SSSSS [86.1K]

The answer is x=6. I double checked the work and am 100% sure thats the answer

7 0
2 years ago
Read 2 more answers
Kiera used place value and the distributive property to find the product of 12 and 597. Her work is shown below. 12(597) = 12(50
olya-2409 [2.1K]

Answer:

(90)(7) ⇒ the error was multiplying 90 and 7.


Step-by-step explanation:

12(597) = 12(500 + 90 + 7)

            = 12(500) + (90)(7)

             = 6000 + 630

                = 6,630

The part in bold shows where the error is. It was not correct to multiply 90 and 7.

The process was to proceed as follows:

12(597) = 12(500 + 90 + 7)

            = 12(500) + 12(90) + 12(7)

             = 6000 + 1080 + 84

                = 7,164

8 0
2 years ago
Tia owns a fruit shop and is selling a fresh lot of apples and oranges. She wants the ratio of apples to oranges sold to be 4 to
Fantom [35]

Answer:

36 apples and 18 oranges

Step-by-step explanation:

4x+2x=54

6x=54

x=54/6

x=9

Apples=4x=36

Oranges=2x=18

6 0
3 years ago
In a booster club, 1/8 of the 128 members are men. How many male members are in the club?
Novay_Z [31]
16 or B. Because  128 divided by 8 is 16
5 0
2 years ago
Read 2 more answers
Other questions:
  • What does 10a-a-a-a equal 
    11·1 answer
  • 1-2*6&lt;13<br> Is this correct
    12·1 answer
  • A parallelogram is shown below:
    11·1 answer
  • Can 45/9 be simplified?
    7·2 answers
  • Need help this is for MATH
    11·1 answer
  • Someone help me!!!!!​
    5·1 answer
  • Help please? trying to catch up on math
    6·2 answers
  • Someone please help me !!!! Will mark Brianliest !!!!!!!!!!!!!!!!
    10·1 answer
  • A group of students is riding in a bike tour. They have biked 15 miles, which is 25% of the tour. How long is the tour?
    12·1 answer
  • Evaluate: 71 − b, if b is 27.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!