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Paraphin [41]
3 years ago
7

Why is it necessary to check that n modifyingabove p with caret greater than or equals 5np≥5 and n modifyingabove p with caret g

reater than or equals 5nq≥5​?
Mathematics
1 answer:
yKpoI14uk [10]3 years ago
4 0
It is important to check both conditions
np ≥ 5
nq = n(1 - p) ≥ 5
when you try to approximate a binomial distribution with a normal distribution.

If these two conditions are verified, it means that the sample is "big enough" to use the approximation, otherwise, the normal distribution does not fit well enough the binomial distribution and the values of mean, etc, could be different. 
Therefore if those conditions are not verified, the normal distribution is not suitable to represent the binomial distribution.
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HELP PLEASE!! I DONT UNDERSTAND!!!!!!!!!! THANKS SO MUCH
8090 [49]

Hello, please consider the following.

We will multiply the numerator and denominator by

4+\sqrt{6x}

to get rid of the root in the denominator.

First of all, we cannot divide by 0, right? So, we need to make sure that the denominator is different from 0.

4-\sqrt{6x} =0\sqrt{6x}=4\\\\\text{Take the square}\\\\6x=4^2=16\\\\x=\dfrac{16}{6}=\dfrac{8}{3}

We need to take any x real number different from 8/3 then and simplify the expression.

Let's do it!

\begin{aligned}\dfrac{4}{4-\sqrt{6x}}&=\dfrac{4(4+\sqrt{6x})}{(4+\sqrt{6x})(4-\sqrt{6x})}\\\\&=\dfrac{4(4+\sqrt{6x})}{(4^2-\sqrt{6x}^2)}\\\\&=\dfrac{4(4+\sqrt{6x})}{(16-6x)}\\\\&=\dfrac{2(4+\sqrt{6x})}{(8-3x)}\\\\&\large \boxed{=\dfrac{8+2\sqrt{6x}}{8-3x}}\end{aligned}

Thank you

8 0
3 years ago
Tucker was asked to solve the equation 5x + 3 = 6x + 1. He did not know if his first step should be to add 5 negative x-tiles, o
Fittoniya [83]
It does not matter which he does first. Either way, zero pairs will be created on both sides, which will isolate the variable to determine x<span>. Adding the </span>x<span>-tiles and then the unit tile, or visa versa, will give the same solution.</span>
4 0
3 years ago
Read 2 more answers
2. Hanna made 5 hit out of 13 during her first baseball game. What percentage of hits did she make?
MrRa [10]

Answer:

B. 38%

Explanation:

Given parameters:

Number of hits = 5hit

Total hits = 13

Unknown:

Percentage of hits shed made = ?

Solution;

The percentage of hit made = \frac{number of hits }{Total hits} x 100

input the parameters and solve;

        Percentage of hit made = \frac{5}{13} x 100

       Percentage of hit = 38%

Percentage of hit = 38%

4 0
3 years ago
Factor b2 + b – 6.
Ulleksa [173]
The answer is A,(b + 3)(b - 2)
6 0
3 years ago
Write the place value 5 in number 2252
MAXImum [283]

Answer:

Tens place value

Step-by-step explanation:

it goes : thousands, hundreds, tens, ones

4 0
3 years ago
Read 2 more answers
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