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
Anon25 [30]
2 years ago
15

A volleyball team won 90% of 80 games played.how many games did they win?

Mathematics
1 answer:
andreyandreev [35.5K]2 years ago
4 0

Answer:

72 games won

Step-by-step explanation:

You might be interested in
If A(x,1),B(-3,7), C(-5,9), and D(5,4) find the value of x so that AB||CD
Mashutka [201]
I’m not sure sorryyyy hope someone helps
3 0
3 years ago
Hello! can you guys help me with this one? 50 Points!!
HACTEHA [7]

Answer:

I believe it is A

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Is 25/40 proportional to 15/24
MArishka [77]
Cross Multiply. 25 * 24 and 40 * 15
Yes, they are proportional

4 0
3 years ago
Read 2 more answers
12 less than the quotient of 12 and a number x
GenaCL600 [577]

Answer:

Step-by-step explanation:

\frac{12}{x} -12

8 0
3 years ago
A charity receives 2025 contributions. Contributions are assumed to be mutually independent and identically distributed with mea
uysha [10]

Answer:

The 90th percentile for the distribution of the total contributions is $6,342,525.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For sums of size n, the mean is \mu*n and the standard deviation is s = \sqrt{n}*\sigma

In this question:

n = 2025, \mu = 3125*2025 = 6328125, \sigma = \sqrt{2025}*250 = 11250

The 90th percentile for the distribution of the total contributions

This is X when Z has a pvalue of 0.9. So it is X when Z = 1.28. Then

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

1.28 = \frac{X - 6328125}{11250}

X - 6328125 = 1.28*11250

X = 6342525

The 90th percentile for the distribution of the total contributions is $6,342,525.

3 0
2 years ago
Other questions:
  • HELP ME PLEASE I NEED HELP ASAP
    11·1 answer
  • There were 3,905 more hits on the schools website in January than February. February had 9,854 hits. How many hits did the schoo
    11·1 answer
  • Company B loses $1,575 for every employee who quits before 90 days. What is the total amount the company will lose if 2 employee
    12·1 answer
  • Solve for 7 + y = -2 -3x
    14·2 answers
  • Help please !!! show work​
    11·1 answer
  • Angle 1 and angle 2 are what kind of angles?
    13·2 answers
  • 240 miles on 12 gallons of gas, Find how many gallons the van needs to travel 500 miles!
    12·2 answers
  • Can some help with this and maybe explain​
    10·1 answer
  • Find the value of the variables in the simplest form
    10·2 answers
  • Factor completely<br> 12n^3 + 15n^2 + 4n + 5
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!