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
Margaret [11]
3 years ago
13

The quiz grades of a math class are given. 83, 76, 68, 97, 68, 80, 89, 74, 75, 81, 91, 90 The grades are normally distributed wi

th a mean of 81 and a standard deviation of 9.3. What is the z-score of the highest grade in the quiz?
A) −1.72
B) −1.08
C) 1.08
D) 1.72
Mathematics
1 answer:
Yuki888 [10]3 years ago
3 0

Answer:

the answer is c) 1.08

Step-by-step explanation:

Step1:

Formula for calculating z-score is;

Z= (x-mean)/standard deviation

where x is the value for which z-score is required

Step 2:

As asked in the question z-score for highest grade is required which is 91;

z= (91-81)/9.3

z=10/9.3

z=1.075

which is approximately;

z=1.08

You might be interested in
Simplify the following equation: 5x-102+13
Setler [38]
The answer is 5x-89 Hope I helped!
5 0
4 years ago
Read 2 more answers
Bob's bill for dinner at a restaurant is $37.80. If he wants to leave a 15% tip, which best represents a reasonable amount for t
Mariana [72]

Multiply the amount of the bill by 15%:

37.80 x 0.15 = 5.67

A 15%  tip would be $5.67

8 0
4 years ago
The table shows the charge for renting a bicycle from a rental shop on Cumberland Island, Georgia, for different amounts of time
Blizzard [7]
The table above describes <span>a function that increases or decreases abruptly from one constant value to another. This means that the answer would be;
 
A) Step Function </span>
3 0
4 years ago
Read 2 more answers
Find the slope and the y-intercept of the line.<br> Y= -5/4x + 7
bazaltina [42]

Answer:

slope = -5/4 and y-intercept= 7

Step-by-step explanation:

5 0
3 years ago
Help me asap my teacher is going because she had a baby ​
rjkz [21]

KMN = 90° (tangent perpendicular to radius)

Using Pythagoras Theorem,

√(8^2 + 6^2) = √(100) = 10

Therefore KN = 10km

7 0
3 years ago
Other questions:
  • Justin bought a package of pens that contained one black one blue and one red pen he randomly pulled two pens out of the package
    5·1 answer
  • Which expression is equivalent to 5(d+1)
    6·2 answers
  • Hey I have a question. What is faithfulness in your opinion
    12·2 answers
  • Please Help me. What is the answer?
    8·1 answer
  • Rewrite with only sin x and cos x. cos 3x
    5·1 answer
  • Which of the following statements is sufficient to prove that BUGS is a parallelogram
    10·2 answers
  • A soda manufacturer knows that sales of soda increase during the summer. To make sure that they get a large portion of the sales
    15·1 answer
  • PLEASE HELP!! (Look at photo)
    8·1 answer
  • Solve the system of equations.
    14·1 answer
  • HELP PLEASE Rajiv has a liability on his car. How is this BEST demonstrated?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!