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
Greeley [361]
3 years ago
13

The average test scores for a particular test in algebra was 84 with a standard deviation of 5. What percentage of the students

scored higher than 89%? Please explain your answer.
Mathematics
1 answer:
Delicious77 [7]3 years ago
8 0

Answer:

The percentage of the students scored higher than 89% is 15.87%

Step-by-step explanation:

we are given

The average test scores for a particular test in algebra was 84

so, mean is 84

\mu=84

a standard deviation of 5

so,

\sigma=5

we have

x=89

now, we can use z-score formula

z=\frac{x-\mu}{\sigma}

now, we can plug values

z=\frac{89-84}{5}

z=1

now, we can use calculator

and we get

p(z>1)=0.1587

So,

The percentage of the students scored higher than 89% is 15.87%

You might be interested in
My last problem and I'm stuck please help!!​
WITCHER [35]
Answer is C= -125,125
4 0
3 years ago
What would be the solution to this problem
lozanna [386]
Angle A: 60 degrees
Angle B: 30 degrees
Angle C: 90 degrees
7 0
3 years ago
I will literally do anything pls solve this pls
Nata [24]
It’s y=3x-3 that is where the line passes thru
8 0
2 years ago
There are 25 students names in a hat. You choose 5 names. Three are boys names and two are girls names.How many of the 25 names
iren [92.7K]
5 is the answer your prop
5 0
3 years ago
True or False: The order of the General Steps in Building Math Models is:
Nastasia [14]
The correct answer is false the order should be 

Step 1
Step 3
Step 5
Step 2 
Step 6
Step 4 
Step 7 
3 0
2 years ago
Other questions:
  • The height of a free falling object at time t can be found using the function, h(t) = - 12t2 + 36t. Where h(t) is the height in
    6·2 answers
  • Which is a prime number?<br> оооо<br> o 13<br> o 14<br> o 15<br> o 16
    15·2 answers
  • HELPPPP:: solve the following equation for X: xy +3=z
    15·2 answers
  • What is a dilation and translation
    5·1 answer
  • How much would $500 invested at 5% interest compounded continuously be
    9·1 answer
  • Dr. Hong prescribed 0.019 liter more medicine than Dr. tannenbaum.Dr. Evan prescribed 0.02 less than Dr. Hong. who prescribed th
    15·1 answer
  • Anna has 7 baskets and some flowers. She has 5 fewer baskets than flowers. How many flowers does anna have?
    6·1 answer
  •   Please help this is due today please i really need help it’s due in 4 hours!!!
    5·1 answer
  • A store is having a sale with 10% off everything.
    9·1 answer
  • The perimeter of a square is 252 feet how long is each side
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!