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
zysi [14]
3 years ago
8

A large number of applicants for admission to graduate study in business are given an aptitude test. Scores are normally distrib

uted with a mean of 460 and standard deviation of 80. What fraction of the applicants would you expect to have a score of 400 or above?
Mathematics
1 answer:
DiKsa [7]3 years ago
8 0

Answer:

The fraction or percentage of the applicants that we would expect to have a score of 400 or above is 77.34%

Step-by-step explanation:

Scores are normally distributed with a mean of 460 and a standard deviation of 80. For a value x, the associated z-score is computed as z = \frac{x-460}{80}, therefore, the z-score for 400 is given by z_{0} = (400-460)/80 = -0.75. To compute the fraction of the applicants that we would expect to have a score of 400 or above, we should compute the probability P(Z > -0.75) = 0.7734, i.e., the fraction or percentage of the applicants that we would expect to have a score of 400 or above is 77.34%

You might be interested in
Working simultaneously and independently at an identical constant rate, 4 machines of a certain type can produce a total of x un
Jobisdone [24]

Answer:

B. 18

Step-by-step explanation:

The 4 machines can produce x units in 6 days. This means they have a daily total rate of x/6 units per day.

Since the machines are similar and that they work at the same rate, this means that the individual rates of each machine would be x/6/4 = x/24 units per day.

Now we are looking at producing 3x units in 4 days. This means that we want to produce 3x/4 units in a single day. Now, since each machine would work at a rate of x/24, we need to know the number of machines we need. To know this number, we simply divide what is to be achieved by the individual rate:

This is 3x/4 divided by x/24. This mathematically means 3x/4 * 24/x = 18 machines

4 0
3 years ago
Find the x- and y- intercepts of the line 6x-2y=24 write your answers as ordered pairs
MrRissso [65]

Answer:

(4,0),(0,-12)

Step-by-step explanation:

7 0
3 years ago
A simple random sample of 25,000 individuals are surveyed in order to determine the prevalence of individuals that contracted th
Neko [114]

Answer:

The prevalence of flu for the past year, as indicated from the survey participants, was of 17%.

Step-by-step explanation:

Given the survey, the prevalence of the flu, as a percentage, is given by:

Number of individuals diagnosed with flu, multiplied by 100, and divided by the size of the sample.

In this question, we have that:

Sample of 25,000, and 4,250 of those had been diagnosed with the flu at some point in the past year. So, the prevalence of the flu is given by:

\frac{4250*100}{25000} = 17

The prevalence of flu for the past year, as indicated from the survey participants, was of 17%.

4 0
3 years ago
ASAP I need help with this ​
Annette [7]

Answer:

its A

Step-by-step explanation:

If its one of these signs(<>) then its open and if its one of the signs with the line under it then its closed

4 0
3 years ago
Read 2 more answers
WILL GIVE BRAINIEST 100 PIONTS
antiseptic1488 [7]
Liar. This is only worth 5 points!!!!!!!!!!!!!!!!!!!!
4 0
3 years ago
Other questions:
  • Find the tan of ∠T
    8·1 answer
  • Simplify: 19x – y – 2z + x + 5y + 2z
    14·1 answer
  • Can someone please help me
    5·2 answers
  • How many district positive factors does 2018 have?
    13·1 answer
  • Find tan2θ if θ terminates in Quadrant IV and cosθ =3/5 .
    12·1 answer
  • a cone with volume 5000m^3 is dialated by a scale factor of 1/5. what is the volume of the resulting cone?​
    7·2 answers
  • A photographer wants to arrange 8 different people for a group picture.
    7·1 answer
  • Pls helppp (spam answers will be reported)
    13·1 answer
  • The area of a planned garden can be modeled by the equation A= -4w2 + 64w,
    13·2 answers
  • Write each mixed number as an improper fraction :<br><br>2 3/7​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!