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
nikdorinn [45]
3 years ago
7

On a standardized exam, the scores are normally distributed with a mean of 145 and a standard deviation of 25. Find the z-score

of a person who scored 210 on the exam
Mathematics
1 answer:
Kryger [21]3 years ago
5 0

Answer:

z = 2.6

Step-by-step explanation:

<u>Use the formula for z-score</u>

z=\frac{x-\mu}{\sigma}\\ \\z=\frac{210-145}{25}\\ \\z=\frac{65}{25}\\ \\z=2.6

This tells us that this person's score of 210 places them 2.6 standard deviations above the mean

You might be interested in
Write 3.666 as a fraction
xenn [34]
3 = 3/1 = 9/3
0.666 is 2/3
2/3 + 9/3 = 11/3
So 3.666 as a fraction is 11/3.
As a mixed number, it is 3 and 2/3.
6 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP!!!!
Aleonysh [2.5K]

Answer:

your answer would be the second option.

Step-by-step explanation:

How this is is because it is in simple y=mx+b formation

the b is +1 and you go down one and over to the  three which is decreasing so it would be -1/3

4 0
3 years ago
There are 9 gallons of paint for the students to use to paint the fence outside of the schoolyard. Each student has a bucket tha
Vera_Pavlovna [14]

Answer:

27 buckets.

Step-by-step explanation:

If we multiply the 9 gallons of paint by the denominator of the number of gallons that fit into one of the buckets we can discover the answer to the question.

Brainliest please.

6 0
3 years ago
Assume that when adults with smartphones are randomly​ selected, ​57% use them in meetings or classes. If 8 adult smartphone use
vovikov84 [41]

Answer:

≈ 0.2526

Step-by-step explanation:

<u>The number of combinations of 4 out of 8:</u>

  • 8C4 = 8!/(4!(8-4)!)= 8*7*6*5/(1*2*3*4)= 70

<u>Success factor is: </u>

  • 57% = 0.57

<u>and failure factor is: </u>

  • (100 - 57)%= 43%= 0.43

<u>Probability:</u>

  • 0.57⁴*0.43⁴*70 ≈ 0.2526
6 0
3 years ago
A system of equations that has at least one solution is called inconsistent.
solmaris [256]

False. Because if it has one then it is consistent.

Source: If a consistent system has an infinite number of solutions, it is dependent . When you graph the equations, both equations represent the same line. If a system has no solution, it is said to be inconsistent. (https://www.varsitytutors.com/hotmath/hotmath.../consistent-and-dependent-systems)

8 0
3 years ago
Read 2 more answers
Other questions:
  • the container that holdsfor football team is 1/4 full. after pouring in 9 gallons of water it is 5/8 full. how many gallons can
    7·1 answer
  • Can you guyz help me with this question.please write the answers step by step ☺️
    9·1 answer
  • In a math game rob reads four statements about the number 51. He has to pick up the true statement to win the game. Which statem
    9·1 answer
  • BEST ANSWER = BRAINLEIST ANSWER!
    15·1 answer
  • Find the perimeter and area of a triangle with the vertices and (3,0) and (6,4)
    9·1 answer
  • Which of these expressions is equivalent to (12^8)
    13·1 answer
  • HELP PLZ PLZ HELP ME is about cylinders and plz check ur work I have got this incorrect plz help me out THANK YOU :)
    6·1 answer
  • which letter would be the most meaningful variable for the problem situation the weight of a box increase by 5​
    15·1 answer
  • Rewrite the expression in terms of ln 4 and ln 5.<br> ln(400)
    11·1 answer
  • I neeeeeeeeeeeeeeeeeeddddddddddddddd helpppp
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!