brettriley4402
25.03.2021 •
Mathematics
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
Solved
Show answers
More tips
- F Family and Home How to Choose the Perfect Air Conditioner for Your Life...
- H Health and Medicine Discover the Hidden Principles and Real Results of the Japanese Diet...
- H Health and Medicine Understanding Pregnancy Tests: What You Need to Know?...
- H Health and Medicine What Makes a Man a Man?...
- C Computers and Internet How to Get Rid of Spam in ICQ?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
- H Health and Medicine How to Cure Adenoids?...
- H Health and Medicine Why Wearing a Back Brace Can Be Beneficial During Back Strain?...
Answers on questions: Mathematics
- M Mathematics I have 3 questions actually WILL MARK BRAINLIEST -info to know, there are 10 red marbles, 6 green marbles, and 8 blue marbles - If a marble is chosen at random from the bowl,...
- M Mathematics Y=0.575x+42 y-intercept...
- M Mathematics Two of the golf scores at the local tournament were unreadable, but the mean score was 85 and the lowest score was 75. if the readable scores are listed below, what are possible...
- M Mathematics The point slope form given (-3,10) with m=-4...
- M Mathematics A rental company uses the function f(x) = 150x + 75 to calculate the cost to rent a beach house x number of nights. The maximum number of nights the beach house can be rented...
- M Mathematics Find the equation of a parabola with focus F(7, 6) and directrix x = 17....
- M Mathematics What is the average rate of change f(x) over the interval [4,13]?...
- M Mathematics X to the second plus 3x + 2 / 2 x - 4 / x to the second - 4 / 2x + 4...
- M Mathematics Find the perimeter of this shape...
- M Mathematics Does anyone know how to do this...
Ответ:
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
Determine if the difference between the student leaders and the entire student population is statistically significant at alpha
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
Ответ: