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
Tcecarenko [31]
3 years ago
9

Female athletes at the University of Colorado, Boulder, have a long-term graduation rate of 67% (Source: Chronicle of Higher Edu

cation). Over the past several years, a random sample of 38 female athletes at the school showed that 21 eventually graduated. Does this indicate that the population proportion of female athletes who graduate from the University of Colorado, Boulder, is now less than 67% ?Use a 5% level of signicance.
Mathematics
1 answer:
VLD [36.1K]3 years ago
3 0

Answer:

Yes, we can assume that the percent of female athletes graduating from the University of Colorado is less than 67%.

Step-by-step explanation:

We need to find p-value first:

z statistic = (p⁻ - p0) / √[p0 x (1 - p0) / n]

p⁻ = X / n = 21 / 38 = 0.5526316

the alternate hypothesis states that p-value must be under the normal curve, i.e. the percent of female athletes graduating remains at 67% 

H1: p < 0.67 

z = (0.5526316 - 0.67) / √[0.67 x (1 - 0.67) / 38] = -0.1173684 / 0.076278575

z = -1.538681 

using a p-value calculator for  z = -1.538681, confidence level of 5%

p-value = .062024, not significant

Since p-value is not significant, we must reject the alternate hypothesis and retain the null hypothesis.

You might be interested in
Consider the following equation:
Sidana [21]
So you would plug in 0 for a from the beginning since this is numerical slope definition of a derivative

3 0
3 years ago
Write an expression for the sequence of operations described below.
Lemur [1.5K]
This might look hard at first, but if you break it down into parts, it will be much easier. With that said, start with what you know. You see that the word problem says "the difference of y and 9", which means that you have to stubtract them. So, part of the equation is going to be y - 9. Now to look at the rest of the word problem. It says to divide by 3, so now you have to take what you have so far and divide that by 3. This means that you are going to have to divide the y - 9 by 3. 

Your answer should be:
y - 9 / 3

***** Note: The slash means division. *************************************
8 0
3 years ago
Is a triangle with the angles 60 degrees, 40 degrees, and 80 degrees unique?
oksano4ka [1.4K]

Hello,

No a triangle with these angles are not unique. This is because every triangle is supposed to have 180 degrees, just like this one.

Have a great day!

5 0
3 years ago
I need help with twelve plz
EleoNora [17]
12)
9/10   /     3/4  
= 9/10 * 4/3
= 12/10
= 6/5 
5 0
3 years ago
What unit rate is 420 miles in 7 hours?
STatiana [176]

420 miles in 7 hours

420/7

60 miles per hour

5 0
3 years ago
Read 2 more answers
Other questions:
  • Somolia's school is selling tickets to a spring musical. On the first day of ticket sales the school sold 3 senior citizen ticke
    11·1 answer
  • (-3x)²-(3x-2)²-6*(2x-1.5)
    8·1 answer
  • How can a mixed number be written as a sum?
    9·1 answer
  • Determine which description of description.
    11·1 answer
  • The Flu Fighters competed against 40 bands in the Chicken Soup County Battle of the Bands. The top 15% will compete in the All V
    13·1 answer
  • Write 1.005 at the mix number then right how to this number out loud
    7·1 answer
  • Factor x2 - 18x + 81. Show your work
    7·2 answers
  • What is the length of segment NS? <br><br> 1 unit<br> 2 units<br> 4 units<br> 6 units
    15·2 answers
  • If there are 28 boys and 56 girls in a room, fill out all of the possible ratios of boys to girls that could be made.
    5·1 answer
  • Please help me with this problem
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!