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
erik [133]
3 years ago
14

Exam grades: Scores on a statistics final in a large class were normally distributed with a mean of 77 and a standard deviation

of
10. Use the TI-84 PLUS calculator to answer the following. Round the answers to at least two decimals.
(a) Find the 28th percentile of the scores.
(b) Find the 65th percentile of the scores.
(c) The instructor wants to give an A to the students whose scores were in the top 12% of the class. What is the minimum score
needed to get an A?
(d) Between what two values are the middle 64% of the scores? (Enter the smaller number in the first box.)
Mathematics
1 answer:
vekshin13 years ago
7 0
Are all of those questions I think it’s C
You might be interested in
What's the difference between 178 and -395
Nastasia [14]
178-(-395)
A positive subtracted by a negative is always positive.
178+395
=573
3 0
3 years ago
Read 2 more answers
NEED DONE ASAP 20 PTS!!!!!!
gayaneshka [121]
X23 yo mama do ya own work
3 0
3 years ago
Read 2 more answers
write and equation to solve for x your only writing the equation will mark brainiest I've got five more questions to go if anybo
vovikov84 [41]
The equation you use would be 3x+10 = 3x-28

they aren’t linear pairs so it cannot equal 180
4 0
4 years ago
Read 2 more answers
A 2 pound box of salt sells for $.89 and a 5 pound box sells for 2.09. What is the linear equation for this?
castortr0y [4]
Y = ax + b;

0.89 = a * 2 + b and 2.09 = a * 5 + b =>
=> 2.09 - 0.89 = a * 5 + a * 2 + b - b => 1.20 = 3 * a => a = 1.20 / 3 => a = 0.40;
b = 0.89 - 0.40 * 2 => b = 0.89 - 0.80 => b = 0.09;

y = 0.40x + 0.09 => 0.40x - y + 0.09 = 0 is the linear equation.
4 0
3 years ago
Angle sum Theory
maria [59]

Step-by-step explanation:

step 1. so ABC is a triangle.

step 2. interior angles of a triangle add up to 180°

step 3. <A + <B + <C = 180°

step 4. 54 + <B + 74 = 180°

step 5. <B = 52°.

3 0
3 years ago
Other questions:
  • Factor: x2 + 5x + 6
    7·1 answer
  • True or false? Based only on the given information, it is guaranteed that LN MO.
    5·2 answers
  • On a separate piece of graph paper, graph y = -|x + 3|; then click on the graph until the correct one appears.
    10·1 answer
  • Factor completely x2 - 8x + 16
    8·1 answer
  • Convert the complex number 3 - 3i into its polar representation. a. 3(cos(60degrees) + isin(60degrees)) b. 3√2(cos(135degrees) +
    12·1 answer
  • Evaluate the expression when x= -6.<br> x² + 8x-9
    12·2 answers
  • One lap around the track on the playground is 1/9 mile. The 5th grade teachers walked 10 laps. How many miles did they walk
    6·1 answer
  • Hello there !!
    10·2 answers
  • Find the length of fencing required to go all the way around the rectangular field that is 136000mm wide and 425m long
    10·1 answer
  • Last years freshman class at big state university totaled 5,305 students of those 1258 received a merit scholarship to help offs
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!