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Gelneren [198K]
4 years ago
14

Solve. 12 students in the classroom and she wants to create a student to teacher ratio of three to one (three students per teach

er). how many teachers must she hire?
Mathematics
1 answer:
Natasha2012 [34]4 years ago
7 0
She will need a one to one ratio so to get to your ratio you need to take your 3 to 1 ratio and divide it by the 1 on 1 ratio 
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If we accept the null hypothesis when, in fact, it is false, we have: committed a Type II error. a probability of being correct
Greeley [361]

Answer:

Correct option: Type II error.

Step-by-step explanation:

In statistical hypothesis testing two kind of errors can be committed by the researcher.

  1. Type I error: The probability of rejecting a null hypothesis when in fact it is true.
  2. Type II error: The probability of not rejecting a null hypothesis when in fact it is false.

The power of the test is defined as the probability of rejecting a false null hypothesis. It is denoted by <em>β</em>.

Then the probability of Type II error can be defined as:

P (Type II error) = 1 - <em>β</em>.

The power of the test is affected by the significance level<em>.</em>

If the significance level is less than the power is also less.

The significance level is related to the <em>p</em>-value of the test.

So the P(Correct) = 1 - <em>p</em>-value.

7 0
3 years ago
A line passes through the point (6, 7) and has a slope of 4.
8_murik_8 [283]

Answer:

y = 4x - 17

Step-by-step explanation:

we can use the equation y = mx + b

where m is the slope.

now we want to find the value of b.

so

7 = 24 + b

b= -17

so the answer is

y = 4x -17

6 0
2 years ago
What is the missing angle measure?
Reil [10]

Answer:

33 degrees

Step-by-step explanation:

Because of the little square in the corner of the triangle, you know that that angle is 90 degrees. Since the second angle is 57 degrees and all of the interior angles of a triangle add up to 180 degrees, the final angle is 180-90-57=33 degrees. Hope this helps!

5 0
3 years ago
Read 2 more answers
Simplify by combining Like Terms: 3x + 6 + 8x2 - 2x + 3x2
Veseljchak [2.6K]

Answer:

11 x ^2 + x + 6.

Good luck & have a good day!

8 0
3 years ago
Read 2 more answers
In a recent survey of 288 people, 72 said that their favorite color of car was white. What percent of the people surveyed liked
Oksi-84 [34.3K]
If you translate this problem literally, it is saying, “72 is what percent of 288?”. And the equational translation of that is 72 = (x/100) • 288
[ “is” means equal to (=) // “what” means x or another variable // “percent” means divided by 100” // “of” means multiplication. ]
Then you solve that equation.
(you can check it by googling what is 25% of 288. )

5 0
3 years ago
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