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
jeka94
3 years ago
15

Work with a partner. A survey asked 200 people to name their favorite

Mathematics
1 answer:
SSSSS [86.1K]3 years ago
8 0

i dont get it either

You might be interested in
Scores on a national math test are Normally distributed, with a mean score of 490 and a standard deviation of 50. Which test sco
alisha [4.7K]

Answer:

532

Step-by-step explanation:

The score that represents the top 20% = A score = 80%

Z score for 80% percentile = 0.842

We solve using the z score formula

z = (x-μ)/σ, where

x is the raw score = ??

μ is the population mean = 490

and σ is the population standard deviation = 50

Hence:

0.842 = x - 490/50

Cross Multiply

0.842 × 50 = x - 490

x = 0.842 × 50 + 490

x = 42.1 + 490

x = 532.1

Approximately = 532

Therefore, the test score = 532

7 0
3 years ago
Read 2 more answers
"assume x is a random variable with mean μ and standard deviation σ . find expressions for the mean and standard deviation of y
Naddika [18.5K]
The mean is (x+μ)/<span>σ</span> as determined by the Canaon-Heinlich equation.
7 0
3 years ago
Use the Pythagorean theorem to find b.<br><br><br><br> b =
Scrat [10]

Answer:

b=5

Step-by-step explanation:

the answer is in the image above

7 0
3 years ago
Read 2 more answers
Each of the five school buses can hold 43 pupils.
MAVERICK [17]
43x5= 215
215 pupils
215-200=15
15 seats
7 0
3 years ago
Read 2 more answers
the ratio of boys to girls in a chorus is 5:6. which shows an equivalent ratio. Use a proportion to solve. A 10 boys to 12 girls
iVinArrow [24]
A. 10 boys to 12 girls because both numbers in the given ratio have been multiplied by two 5*2=10 6*2=12. None of the other options can be simplified to the original given ratio of 5:6.
8 0
2 years ago
Other questions:
  • Solve this system of equations:
    12·1 answer
  • How can you determine the sale price if you are given the regular price and the percent of markdown?
    7·1 answer
  • The sum of Andy and Brett's ages is 44. Andy's age is 8 more than twice Brett's age. What are the variables in this situation?
    10·1 answer
  • A dime has the same value as 10 pennies Marley brought 290 pennies to the bank how many dimes did Marley get
    14·2 answers
  • How do you change a mixed number to an improper fraction?
    14·1 answer
  • Please help me solve all of these
    10·1 answer
  • What is the value of each digit in 312.054
    6·1 answer
  • Find the absolute value of |-3+8i|​
    8·2 answers
  • Find the measure of angle x in the figure below:
    13·1 answer
  • Pls help 15x-17+3x-11=180
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!