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
leva [86]
2 years ago
12

224 7/10 into a decimal

Mathematics
1 answer:
Sidana [21]2 years ago
8 0
Change into an improper fraction. 2247/10 then divide. So, 224.7. Or since you know 7/10 is 0.7 just add 224
You might be interested in
Problem Solving
Misha Larkins [42]
No. Four times five is twenty, so if Andrea has five five dollar bills, she can afford the tennis shoes. <span />
5 0
3 years ago
What is the domain and range?<br>​
fgiga [73]

Answer:

Answer:The domain is all the values that go into a function.and the range is all the values that come out.

6 0
3 years ago
May types 125 words 7.5 minutes.Josh types 65 words in 3mins.Tyler types 400 words in 28 minutes. Order the student from who can
tensa zangetsu [6.8K]
Tyler can type the fastest among the three.
5 0
3 years ago
To which set of numbers does −38 belong?
MariettaO [177]
They belong to the number group of INTEGERS
7 0
2 years ago
Read 2 more answers
The scores of students on the ACT college entrance exam in a recent year had the normal distribution with mean  =18.6 and stand
Maurinko [17]

Answer:

a) 33% probability that a single student randomly chosen from all those taking the test scores 21 or higher.

b) 0.39% probability that the mean score for 76 students randomly selected from all who took the test nationally is 20.4 or higher

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 random variable X, with mean \mu and standard deviation \sigma, the sample means with size n of at least 30 can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}

In this problem, we have that:

\mu = 18.6, \sigma = 5.9

a) What is the probability that a single student randomly chosen from all those taking the test scores 21 or higher?

This is 1 subtracted by the pvalue of Z when X = 21. So

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

Z = \frac{21 - 18.6}{5.4}

Z = 0.44

Z = 0.44 has a pvalue of 0.67

1 - 0.67 = 0.33

33% probability that a single student randomly chosen from all those taking the test scores 21 or higher.

b) The average score of the 76 students at Northside High who took the test was x =20.4. What is the probability that the mean score for 76 students randomly selected from all who took the test nationally is 20.4 or higher?

Now we have n = 76, s = \frac{5.9}{\sqrt{76}} = 0.6768

This probability is 1 subtracted by the pvalue of Z when X = 20.4. So

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

By the Central Limit Theorem

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

Z = \frac{20.4 - 18.6}{0.6768}

Z = 2.66

Z = 2.66 has a pvalue of 0.9961

1 - 0.9961 = 0.0039

0.39% probability that the mean score for 76 students randomly selected from all who took the test nationally is 20.4 or higher

4 0
3 years ago
Other questions:
  • How do i write an equation in slope intercept
    12·2 answers
  • I have no clue what I’m doing can someone help me with number 5
    7·1 answer
  • Using a table, show 60% of 80 60% of 80 is о​
    8·1 answer
  • What is the vertex of the parabola represented by y = -12 + 6x - 5?
    6·1 answer
  • Solve 3,200 divided by 10 using a area model
    12·1 answer
  • Can someone please help my math assignment is due in 4 hours and I have no idea how to do these 2 problems
    7·1 answer
  • Help fast!!! will mark brilliant !!!!!!!
    8·2 answers
  • I had trouble plotting the midpoint lol but can someone plz help me :c​
    9·2 answers
  • I have to calculate the lengths of all the triangles sides using pythagoras theorem
    5·1 answer
  • What is the total surface area of a cylinder with a diameter of 10.8 and a height of 2.6?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!