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
Lady bird [3.3K]
3 years ago
10

3. A researcher randomly selects a sample of 61 former student leaders from a list of graduates of UNCG who had participated in

leadership positions while a student. She discovered that it has taken an average of 4.97 years for these student leader graduates to finish their degrees, with a standard deviation of 1.23. The average for the entire student body is 4.56 years. Is the difference between student leaders and the entire student population statistically significant at the alpha
Mathematics
1 answer:
Sophie [7]3 years ago
3 0

Answer:

not statistically significant at ∝ = 0.05

Step-by-step explanation:

Sample size( n )  = 61

Average for student leader graduates to finish degree ( x') = 4.97 years

std = 1.23

Average for student body = 4.56 years

<u>Determine if the difference between the student leaders and the entire student population is statistically significant at alpha</u>

H0( null hypothesis ) : u = 4.56

Ha : u ≠ 4.56

using test statistic

test statistic ; t = ( x' - u ) / std√ n

                        = ( 4.97 - 4.56 ) / 1.23 √ 61

                        = 2.60

let ∝ = 0.05 , critical value = -2.60 + 2.60

Hence we wont fail to accept  H0

This shows that the difference between the student leaders and the entire student population is not statistically significant at ∝ = 0.05

You might be interested in
Guys can you please to this thank
hram777 [196]
= 16 + 49 - 3(11)  - 4(10)
= 16 + 49 - 33 - 40
= -8
7 0
3 years ago
Please help me now plz
sergey [27]

Answer:

x=12

Step-by-step explanation:

The right side is a right triangle

The base is 1/2 of the bottom or 5

The height is x and the hypotenuse is 13

We can use the Pythagorean theorem

a^2 +b^2 = c^2

5^2 +x^2=13^2

25+x^2 = 169

Subtract 25 from each side

25-25+x^2 = 169-26

x^2 =144

Take the square root of each side

sqrt(x^2) = sqrt(144)

x= 12

4 0
3 years ago
If x= -3, and -3 = y, then what can be said about the relationship between x and y? Explain
ella [17]

I'd say that the relationship between y and x is that they're both equivalent to each other, since -3 = -3.

7 0
3 years ago
Read 2 more answers
For f(x) = 3x +1 and g(x) = x - 6, find (f- g)(x).
Finger [1]

Answer:

c. -x + 3x + 7  = 2x+7

Step-by-step explanation:

f(x) = 3x +1 and g(x) = x - 6

f-g = 3x +1 - ( x - 6)

Distribute the minus sign

     = 3x+1 - x+6

     = 2x +7

4 0
3 years ago
Which of the following is NOT a prime number?<br><br> A. 3163<br> B. 1057<br> C. 157<br> D. 263
Ahat [919]
B, 1057 is not prime.
8 0
3 years ago
Read 2 more answers
Other questions:
  • What's 35 minutes in a fraction
    8·2 answers
  • Helpppppppp pleaseeee
    8·1 answer
  • Addison plays 1/2 of a song in 1/4 of a minute. How minutes will she need to play a full song?
    9·2 answers
  • Can a house be designed without mathematics
    8·2 answers
  • 3/7x + 4 = -1/2<br><br>explain pls
    13·1 answer
  • Can some one help me plz i will mark brainlist if u get it right
    11·2 answers
  • A farmer plants 0.4 of a field with wheat. the field is 3.45 acres. how many acres are planted with wheat?
    13·1 answer
  • How would you graph -x plus 2 thx
    10·1 answer
  • Fill in the blank 2(x+7) = 2x + __
    9·1 answer
  • Simplify the expression (4-7i)-(3 + 2i).
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!