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
alexdok [17]
3 years ago
6

A college statistics class at a nearby university has 1,000 students enrolled in it. On a recent exam, the mean score was 75% wi

th a standard deviation of 5%. Use the calculator to show what percentage of students scored between a 73 and 78 (C grade).
Mathematics
1 answer:
IceJOKER [234]3 years ago
4 0

Answer:

38.11%

Step-by-step explanation:

Given that:

Mean (μ) = 75, standard deviation (σ) = 5

Z score is a measure in statistics to determine the variation of a raw score from the mean. It is given by the equation:

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

To calculate the percentage of students scored between a 73 and 78 (C grade), we need to find the z score for 73 and then for 78.

For x = 73, the z score is:

z=\frac{x-\mu}{\sigma}=\frac{73-75}{5} =-0.4

For x = 78, the z score is:

z=\frac{x-\mu}{\sigma}=\frac{78-75}{5} =0.6

From the probability distribution table:

P(73 < x < 78) = P(-0.4 < z < 0.6) = P(z < 0.6) - P(z < -0.4) = 0.7257 - 0.3446 = 0.3811 = 38.11%

You might be interested in
A submarine changes its position by −7 meters every second.
IgorLugansk [536]
The correct anwer is -21 and how i got that is by taking -7*300 to get -21 as my answer let me know if it helped any...
5 0
3 years ago
Read 2 more answers
An exponential function f(x) is reflected across the y-axis to create function g(x). Which is a true statement regarding f(x) an
Kobotan [32]
It's B, I'm doing my online school assignment and this was the correct answer.
6 0
3 years ago
Read 2 more answers
I need help with Which table shows the correct methods used to justify the solution steps?
12345 [234]

Answer:

x = 8

Step-by-step explanation:

3 (x - 5) + 7x = 65

3x - 15 + 7x = 65

10x - 15 = 65

10x = 80

x = 8

5 0
2 years ago
Read 2 more answers
|x-1|+2&lt;4 solving for x
Ganezh [65]

Answer:

x < 3 and x > -1

Step-by-step explanation:

Step 1: Subtract 2 from both sides.

  • |x-1| + 2 - 2 < 4 - 2
  • |x-1|

Step 2: Solve absolute value.

  • We know x - 1 < 2 and x - 1 > -2.

Condition 1:

  • x - 1 < 2
  • x - 1 + 1 < 2 + 1 (Add 1 to both sides)
  • x < 3

Condition 2:

  • x - 1 > -2
  • x - 1 + 1 > -2 + 1 (Add 1 to both sides)
  • x>-1

Therefore, the answer is x < 3 and x > -1.

8 0
2 years ago
Identify an equation in point-slope form for the line perpendicular to
Zigmanuir [339]

Answer:

perp. : 1/3= m

y + 8 = 1/3(x -4): answer is c

y + 24/3 = (1/3)x - 4/3

y = (1/3)x - 28/3

Step-by-step explanation:

answer is c

8 0
3 years ago
Other questions:
  • A school principal ordered 1000 pencils ha gave an equal number to each of 7 teachers until he had given as many as possible
    8·1 answer
  • Pls help! Find the value of x in the figure below<br><br>18<br>9<br>4.5<br>3​
    15·1 answer
  • Pythagorean theorem
    12·1 answer
  • A pastry recipe calls for 3 cups of flour to make 8 servings. how many cups of flour are needed to make 6 servings?
    13·2 answers
  • Paul has 15 T-shirts. The information shows the colours of his T-shirts. He takes one of his blue T-shirts at random. What is th
    8·1 answer
  • What times what =13?
    8·2 answers
  • Mr brown bought a lot that ia half as long and twice as wide Mrs.Rockwell's lot.How does the area of his lot compare to the area
    7·1 answer
  • Use the given probability of each event to find the probability of the complement
    9·2 answers
  • HELP PLEASE
    9·1 answer
  • What is the mean "6 5 6 1 5 5 0"
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!