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
photoshop1234 [79]
3 years ago
10

Given a mean of 150 and a standard deviation of 25 Define the interval about the mean that contains 95% of the data.

Mathematics
1 answer:
ohaa [14]3 years ago
7 0
By normal curve symmetry 

<span>from normal table </span>
<span>we have z = 1.15 , z = -1.15 </span>

<span>z = (x - mean) / sigma </span>
<span>1.15 = (x - 150) / 25 </span>
<span>x = 178.75 </span>


<span>z = (x - mean) / sigma </span>
<span>-1.15 = (x - 150) / 25 </span>
<span>x = 121.25 </span>

<span>interval is (121.25 , 178.75) </span>

<span>Pr((121.25-150)/25 < x < (178.75-150)/25) </span>
<span>is about 75%</span>
You might be interested in
How much<br> lemonade will<br> each person get<br> if 4 people share <br> 1/2 gallon equally?
Charra [1.4K]
I’m pretty sure the answer would be 8 if u cut 4 in half 4 times
3 0
3 years ago
Hese are the values in Paul’s data set.
andrew-mc [135]
Answer: See description below.

The residuals are the differences between the predicted values and the actual values. You will need to make a scatter plot of each difference.

Here are the five points that you will need to plot:
20 - 21 = -1  (1, -1)
17 - 16 = 1 (2, 1)
9 - 10 = -1 (4, -1)
6 - 5 = 1 (5, 1)
2 - 2 = 0 (6, 0)
8 0
3 years ago
Read 2 more answers
Follow the process of completing the square to solve 2x2 + 8x - 12 = 0. After adding B2 to both sides of the equation in step 4,
Katena32 [7]
2x^2 + 8x - 12 = 0..divide by 2
x^2 + 4x - 6 = 0
x^2 + 4x = 6...add 4 to both sides of the equation
x^2 + 4x + 4 = 6 + 4
(x + 2)^2 = 10....<== ur constant is 10
x + 2 = (+-)sqrt 10
x = -2 (+ - ) sqrt 10

x = -2 + sqrt 10
x = -2 - sqrt 10

3 0
3 years ago
Read 2 more answers
What is the difference between vertical and horizontal lines?
Zina [86]

Answer:

A vertical line is any line parallel to the vertical direction. A horizontal line is any line normal to a vertical line. Horizontal lines do not cross each other.

6 0
3 years ago
Read 2 more answers
How many computers must the AB Computer Company sell to break even? Let x be the number of computers.
Eduardwww [97]

Answer:

The Company AB must sell 116 computers to break even

Step-by-step explanation:

we have

R(x)=1.5x -----> equation A

C(x)=145+\frac{1}{4}x ----> equation B

where

C is the cost function

R is the revenue function

x is the number of computers sold

we know that

Break even is when the cost is equal to the revenue

so

equate equation A and equation B

1.5x=145+\frac{1}{4}x

Solve for x

subtract 1/4x both sides

1.5x-\frac{1}{4}x=145

1.5x-0.25x=145

1.25x=145

Divide by 1.25 both sides

x=116

therefore

The Company AB must sell 116 computers to break even

7 0
3 years ago
Other questions:
  • Which ratio in this triangle represents cos θ?
    12·2 answers
  • What is the solution set of 8^x+2=32^x-8
    14·1 answer
  • Please help me thank you
    12·1 answer
  • 100 more than 225 is​
    14·2 answers
  • 3m=5(m+3)-3 How do I solve it
    11·2 answers
  • Help plsss this is for a test pls
    13·1 answer
  • Please help me with both problems I’ll mark as brainliest!!!
    11·1 answer
  • Suppose that a = 0, b = 2, and c= 1. Which of the following expressions is undefined?
    7·1 answer
  • 5. Use the vertical method to multiply two trinomials.
    13·1 answer
  • PLS HELP ASAP FIRST CORRECT ANSWER GETS BRAINLEIST​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!