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
Fudgin [204]
3 years ago
6

If there are 12 boys and 20 students, write as a ratio for boys to students in 3 ways.

Mathematics
1 answer:
ruslelena [56]3 years ago
3 0

12:20

6:10

3:5

Hope that helps :)

You might be interested in
Albert sells furniture. His base salary is $300 per week, plus 5.5% commission. If his total sales for last week were $2950, wha
Andreas93 [3]

Answer:

16225

Step-by-step explanation:

You need to multiply

5 0
3 years ago
Which of the following is NOT a requirement of testing a claim about a population proportion using a formal method of hypothesis
Pie

Answer:

A. The lowercase​ symbol, p, represents the probability of getting a test statistic at least as extreme as the one representing sample data and is needed to test the claim.

Step-by-step explanation:

The conditions  required for testing  of a claim about a population proportion using a formal method of hypothesis​ testing are:

1) The sample observations are a simple random sample.

2) The conditions for a binomial distribution are satisfied

3) The conditions np5 and nq5 are both satisfied. i.e n: p≥ 5and q≥ 5

These conditions are given in th options b,c and d.

Option A is not a condition for testing  of a claim about a population proportion using a formal method of hypothesis​ testing.

8 0
2 years ago
A random sample of 36 students at a community college showed an average age of 25 years. Assume the ages of all students at the
Pavel [41]

Answer:

98% confidence interval for the average age of all students is [24.302 , 25.698]

Step-by-step explanation:

We are given that a random sample of 36 students at a community college showed an average age of 25 years.

Also, assuming that the ages of all students at the college are normally distributed with a standard deviation of 1.8 years.

So, the pivotal quantity for 98% confidence interval for the average age is given by;

             P.Q. = \frac{\bar X - \mu}{\frac{\sigma}{\sqrt{n} } } ~ N(0,1)

where, \bar X = sample average age = 25 years

            \sigma = population standard deviation = 1.8 years

            n = sample of students = 36

            \mu = population average age

So, 98% confidence interval for the average age, \mu is ;

P(-2.3263 < N(0,1) < 2.3263) = 0.98

P(-2.3263 < \frac{\bar X - \mu}{\frac{\sigma}{\sqrt{n} } } < 2.3263) = 0.98

P( -2.3263 \times {\frac{\sigma}{\sqrt{n} } < {\bar X - \mu} < 2.3263 \times {\frac{\sigma}{\sqrt{n} } ) = 0.98

P( \bar X - 2.3263 \times {\frac{\sigma}{\sqrt{n} } < \mu < \bar X +2.3263 \times {\frac{\sigma}{\sqrt{n} } ) = 0.98

98% confidence interval for \mu = [ \bar X - 2.3263 \times {\frac{\sigma}{\sqrt{n} } , \bar X +2.3263 \times {\frac{\sigma}{\sqrt{n} } ]

                                                  = [ 25 - 2.3263 \times {\frac{1.8}{\sqrt{36} } , 25 + 2.3263 \times {\frac{1.8}{\sqrt{36} } ]

                                                  = [24.302 , 25.698]

Therefore, 98% confidence interval for the average age of all students at this college is [24.302 , 25.698].

8 0
2 years ago
Help help help help pls
Yanka [14]

Answer:

x - 3 > 10

Step-by-step explanation:

3 0
3 years ago
While completing a multiplication problem I need to know how to do it by associative
Vera_Pavlovna [14]

Associative property Says that you can add or multiply regardless of how the numbers are group

3 0
3 years ago
Other questions:
  • When factoring x^2 + 9x + 18, what's the first thing you should look at?
    15·1 answer
  • Plz help me with Geometry
    5·1 answer
  • Put in ascending order<br>5x^{4}+6x^{5}+3x^{2}+2
    14·1 answer
  • A number divided by 14
    8·2 answers
  • PLZ HELP!!! Estimate the diameter of a circle with a circumference of 86 cm.
    15·1 answer
  • How do I work out this question ??
    6·1 answer
  • Eric is a real estate agent. He makes a 5% commission on each house he sells. Last month, Eric sold three houses. The sale price
    5·2 answers
  • If –3x = -18, what is the value of x?​
    5·2 answers
  • Which expression is equivalent to? Assume x &gt; 0 and y &gt; 0.
    13·2 answers
  • Evaluate the expression when m= 2. m2 - 8m -3​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!